Question

4) Complete o quadro abaixo:
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Answer 1

Explicação passo-a-passo:

b)

=>Aplicação da distributiva

$</strong><strong>\</strong><strong>s</strong><strong>f</strong><strong> </strong><strong>x</strong><strong>(x + 8) = 65$

$\boxed{\boxed{ </strong><strong>\</strong><strong>s</strong><strong>f</strong><strong> </strong><strong>{x}^{2} + 8x = 65}}$

=>Equação do 2° grau igualando a 0

$</strong><strong>\</strong><strong>s</strong><strong>f</strong><strong> </strong><strong>x</strong><strong>(x + 8) = 65$

$</strong><strong>\</strong><strong>s</strong><strong>f</strong><strong> </strong><strong>{x}^{2} + 8x = 65$

$\boxed{\boxed{</strong><strong>\</strong><strong>s</strong><strong>f</strong><strong> {x}^{2} + 8x - 65 = 0}}$

c )

=>Aplicação da distributiva

$</strong><strong>\</strong><strong>s</strong><strong>f</strong><strong> </strong><strong>x</strong><strong>(x - 9) = 0$

$\boxed{\boxed{ </strong><strong>\</strong><strong>s</strong><strong>f</strong><strong> </strong><strong>{x}^{2} - 9x = 0}}$

=>Equação do 2° grau igualando a 0

$</strong><strong>\</strong><strong>s</strong><strong>f</strong><strong> </strong><strong>x</strong><strong>(x - 9) = 0$

$\boxed{\boxed{</strong><strong>\</strong><strong>s</strong><strong>f</strong><strong> </strong><strong>{x}^{2} - 9x = 0}}$

d )

=>Aplicação da distributiva

$\sf 5x(x + 3) = 0$

$\boxed{\boxed{\sf 5 {x}^{2} + 15x = 0}}$

=> Equação do 2° grau igualando a 0

$</strong><strong>\</strong><strong>s</strong><strong>f</strong><strong> </strong><strong>5x(x + 3) = 0$

$</strong><strong>\boxed{\boxed{</strong><strong>\</strong><strong>s</strong><strong>f</strong><strong> </strong><strong>5 {x}^{2} + 15x = 0}}$

Espero ter ajudado !!!