Question

Responde passo a passo pfv, PLSSSSSSSSS
15x-10x²/2=15(x-2)-10(x-2)²/2

Answer 1

Resposta: x=30.166206258

Explicação passo-a-passo:

15x-10x²=15(x-2)²

      2              2

15x-10x²=15x-30²

15x-10x²=15x+900

-10x²=900

x²=900+10

x²=910

x=$\sqrt{910$

x=30.166206258

Answer 2

Resposta:

OLÁ

VAMOS A SUA PERGUNTA:⇒⇒

$\sf 15x-\dfrac{10x^2}{2}=15(x-2)-10 \dfrac{(x-2)}{2}$

$\sf30x-10x^2=30(x-2)-10(x-2)^2$

$\sf 30x-10x^2=30x-60-10(x-2)^2$

$\sf 30x-10x^2=30x-60-10(x^2-4x+4)$

$\sf 30x-10x^2=30x-60-10x ^2+40x-40$

$\sf 30x-10x^2=70x-60-10x^2-40$

$\sf 30x-10x^2=70x-100-10x^2$

$\sf 30x-10x^2-70x=-100-10x^2$

$\sf -40x-10x^2=-100-10x ^2$

$\sf -40x-10x^2+10x^2=-100$

$\sf -40x=-100$

$\sf x=\dfrac{-100}{40}$

$\boxed{\bold{\displaystyle{\clubsuit\ \spadesuit\ \maltese\ \sf \green{x=\frac{5}{2}=2\frac{1}{2}=2.5}} }}\ \checkmark$← RESPOSTA.

Explicação passo-a-passo:

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