Question

produto notável (5× +8)²​

Answer 1

Explicação passo-a-passo:

$(5x + 8).(5x + 8) \\ {(5x)}^{2} + 2.5x.8 + {8}^{2} \\ {25x}^{2} + 80x + 64$

desenvolvendo a eq de segundo grau:

a = 25 b=80 c=64

$dlta = {80}^{2} - 4.25.64 \\ delta = 6400 - 6400 \\ delta = 0$

$x = \frac{ - 80( + - ) \sqrt{0} }{2.25} \\ x = \frac{ - 80}{50} = \frac{ - 8}{5}$

Answer 2

꧁Hello, how are you?꧂

• Bom... vamos lá, baby!

${\red{(5x + 8) {}^{2} }} \\ \\ {\red{(5x) {}^{2} + 2 \times 5x \times 8 + 8 {}^{2} }} \\ \\ {\red{25x {}^{2} + 2 \times 5x \times 8 + 8 {}^{2} }} \\ \\ {\red{25x {}^{2} + 80x + 8 {}^{2} }} \\ \\ {\red{25x {}^{2} + 80x + 64 }}$

${\red{Keep \: loving...}}$

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Signed: Lohany Queen of hell 彡★

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