Question

1-Efetue:

a) (x 3) (x 2)=(x-5)²

Answer 1

∞Tenho∞Sua∞Resposta∞

Simplify the left side.

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6x2=(x−5)2

Move all terms containing x

to the left side of the equation.

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5x2+10x−25=0

Factor 5

out of 5x2+10x−25

.

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5(x2+2x−5)=0

Divide both sides of the equation by 5

. Dividing 0 by any non-zero number is 0

.

(x2+2x−5)=0

Set x2+2x−5

equal to 0 and solve for x

.

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x=−1±√6

x≈1.44948974,−3.44948974

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