The value of the expression is 645. Steps: 1. Perform the multiplications first: (−3) × 2 = −6; 215 × (−3) = −645 2. Substitute these values back into the expression: −6 − (−645) + 6 3. Simplify the double negative: −6 + 645 + 6 4. Perform the additions from left to right: −6 + 645 = 639; 639 + 6 = 645

(-3)2-215(-3) +6

September 11, 2026Mathematics

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Answer

The value of the expression is 645.

Steps:

Perform the multiplications first: $(-3) \cdot 2 = -6$ $215 \cdot (-3) = -645$
Substitute these values back into the expression: $-6 - (-645) + 6$
Simplify the double negative: $-6 + 645 + 6$
Perform the additions from left to right: $-6 + 645 = 639$ $639 + 6 = 645$

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(-3)2-215(-3) +6

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