3 years ago

What is the answer 8x-7 = 3x-7+5x

Mathematics

1 answer:

vivado [14]3 years ago

6 0

The answer is x=0 cause everything cancels out

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3 years ago

PLEASE HELP!!!!!!!!!

kolezko [41]

Let $x_1 , x_2$ be the roots of the equation $3x^2-5x-7$ . By the Viet theorem you have that $\left \{ {{x_1+x_2=- \frac{5}{3} } \atop {x_1x_2= \frac{-7}{3} }} \right.$ .

For the equation $x^2+bx+c = 0$ you'll have that $c=(x_1+2)(x_2+2)=x_1x_2+2(x_1+x_2)+4=\frac{-7}{3}+2\cdot(- \frac{5}{3} )+4$
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4 0

3 years ago