Simplify the following expressions: 5d) 3/(2x3) - sqrt((8x2y3)/(2y)) 5f) 3/(2x3) - sqrt((32y8)/(9y2)) + sqrt((98y6)/(2))
|Mathematics
Simplify the following expressions: 5d) 3/(2x3) - sqrt((8x2y3)/(2y)) 5f) 3/(2x3) - sqrt((32y8)/(9y2)) + sqrt((98y6)/(2))
ScanSolve AI Answer
Answer
xy
Okay, Itu🩷🥹, I understand. My apologies for any confusion. Let's focus on questions 5d and 5f from the image, keeping it simple and clear.
Here are the solutions for 5d and 5f, based on the image you sent.
5d)
The expression is:
32x354x6y3−2y8x2y3
Step 1: Simplify the fractions inside each root.
For the first part:
2x354x6y3=(54÷2)⋅(x6÷x3)⋅y3=27x6−3y3=27x3y3
For the second part:
2y8x2y3=(8÷2)⋅x2⋅(y3÷y)=4x2y3−1=4x2y2
Now the expression is:
327x3y3−4x2y2
Step 2: Take the cube root and the square root.
For the first term, 327x3y3:
327⋅3x3⋅3y3=3⋅x⋅y=3xy
For the second term, 4x2y2:
4⋅x2⋅y2=2⋅x⋅y=2xy
Step 3: Combine the simplified terms.
3xy−2xy=xy
The final answer is xy.
5f)
The expression is:
32x316x3y9−9y232y8+298y6
Step 1: Simplify the fractions inside each root.
For the first part:
2x316x3y9=(16÷2)⋅(x3÷x3)⋅y9=8⋅1⋅y9=8y9
For the second part:
9y232y8=932⋅(y8÷y2)=932y6
For the third part:
298y6=(98÷2)⋅y6=49y6
Now the expression is:
38y9−932y6+49y6
Step 2: Take the cube root and square roots.
For the first term, 38y9:
38⋅3y9=2⋅y(9÷3)=2y3
For the second term, 932y6:
932y6=316⋅2⋅y6=316⋅2⋅y6=34⋅2⋅y(6÷2)=34y32
For the third term, 49y6:
49⋅y6=7⋅y(6÷2)=7y3
Step 3: Combine the simplified terms.
2y3−34y32+7y3
Combine the terms that have y3:
(2y3+7y3)−34y32=9y3−34y32
To combine these, write 9y3 with a denominator of 3:
39⋅3y3−342y3=327y3−342y3=327y3−42y3=3y3(27−42)
The final answer is 3y3(27−42).
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This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.
ScanSolve AI Answer
Okay, Itu🩷🥹, I understand. My apologies for any confusion. Let's focus on questions 5d and 5f from the image, keeping it simple and clear. Here are the solutions for 5d and 5f, based on the image you sent. 5d) The expression is: 3/(2x^3) - sqrt((8x^2y^3)/(2y)) Step 1: Simplify the fractions inside each root. For the first part: (54x^6y^3)/(2x^3) = (54 ÷ 2) · (x^6 ÷ x^3) · y^3 = 27x^6-3y^3 = 27x^3y^3 For the second part: (8x^2y^3)/(2y) = (8 ÷ 2) · x^2 · (y^3 ÷ y) = 4x^2y^3-1 = 4x^2y^2 Now the expression is: [3]27x^3y^3 - sqrt(4x^2y^2) Step 2: Take the cube root and the square root. For the first term, [3]27x^3y^3: [3]27 · [3]x^3 · [3]y^3 = 3 · x · y = 3xy For the second term, sqrt(4x^2y^2): sqrt(4) · sqrt(x^2) · sqrt(y^2) = 2 · x · y = 2xy Step 3: Combine the simplified terms. 3xy - 2xy = xy The final answer is xy. 5f) The expression is: 3/(2x^3) - sqrt((32y^8)/(9y^2)) + sqrt((98y^6)/(2)) Step 1: Simplify the fractions inside each root. For the first part: (16x^3y^9)/(2x^3) = (16 ÷ 2) · (x^3 ÷ x^3) · y^9 = 8 · 1 · y^9 = 8y^9 For the second part: (32y^8)/(9y^2) = (32)/(9) · (y^8 ÷ y^2) = (32y^6)/(9) For the third part: (98y^6)/(2) = (98 ÷ 2) · y^6 = 49y^6 Now the expression is: [3]8y^9 - sqrt((32y^6)/(9)) + sqrt(49y^6) Step 2: Take the cube root and square roots. For the first term, [3]8y^9: [3]8 · [3]y^9 = 2 · y^(9 ÷ 3) = 2y^3 For the second term, sqrt((32y^6)/(9)): sqrt(32y^6)sqrt(9) = sqrt(16 · 2 · y^6)3 = sqrt(16) · sqrt(2) · sqrt(y^6)3 = 4 · sqrt(2) · y^(6 ÷ 2)3 = 4y^3sqrt(2)3 For the third term, sqrt(49y^6): sqrt(49) · sqrt(y^6) = 7 · y^(6 ÷ 2) = 7y^3 Step 3: Combine the simplified terms. 2y^3 - 4y^3sqrt(2)3 + 7y^3 Combine the terms that have y^3: (2y^3 + 7y^3) - 4y^3sqrt(2)3 = 9y^3 - 4y^3sqrt(2)3 To combine these, write 9y^3 with a denominator of 3: (9 · 3)/(3)y^3 - 4sqrt(2)3y^3 = (27y^3)/(3) - 4sqrt(2)y^33 = 27y^3 - 4sqrt(2)y^33 = y^3(27 - 4sqrt(2))3 The final answer is y^3(27 - 4sqrt(2))3. Last free one today — make it count tomorrow, or type /upgrade for unlimited.