Solve for x and y. (2x+2):(y−5) = 1:2

Tunapewa fomula:

$$b = \sqrt{\frac{k-aC}{a}}$$

Kwanza, pandisha pande zote mbili kwa mraba ili kuondoa mzizi wa mraba:

$$b^2 = \frac{k-aC}{a}$$

Zidisha pande zote mbili kwa $a$:

$$ab^2 = k-aC$$

Toa $k$ kutoka pande zote mbili:

$$ab^2 - k = -aC$$

Gawanya pande zote mbili kwa $-a$:

$$\frac{ab^2 - k}{-a} = C$$

Hii inaweza kuandikwa upya kama:

$$C = \frac{k - ab^2}{a}$$

Tunapewa $K=1$, $a=4$, na $b=2$. Badilisha hizi kwenye fomula ya C:

$$C = \frac{1 - (4)(2)^2}{4}$$

$$C = \frac{1 - (4)(4)}{4}$$ $$C = \frac{1 - 16}{4}$$ $$C = \frac{-15}{4}$$ $$C = -3.75$$

Thamani ya C ni $-3.75$.