Question

$2x {}^{2} = - 3 + 7x$
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Answer 1

2x²=-4+7x

2x²-7x-4=0

2x²+x-8x-4=0

x(2x+1)-4(2x+1)=0

(x-4)(2x+1)=0

x-4=0

x=4

2x+1=0

2x=-1

x=-½

S={-½, 4}

Answer 2

Resposta:

x=-9

Explicação passo-a-passo: