Question

a) (x+2)2= b)(x-4)2= c)(3x+5)2= d)(2x-3)2 =e)(2ab-3)2= f)(potencia de 2 elevador a 3 a+x) 3 me ajudem por favor preciso pra hj​

Answer 1

$a) \\ (x + 2) {}^{2} \\ x {}^{2} + 2x \: . \: 2 + 2 {}^{2} \\ \boxed{\boxed{\boxed{x {}^{2} + 4x + 4 }}}$

$b) \\ (x - 4) {}^{2} \\ x {}^{2} - 2x \: . \: 4 + 4 {}^{2} \\ \boxed{\boxed{\boxed{x {}^{2} - 8x + 16 }}}$

$c) \\ (3x + 5) {}^{2} \\ (3x) {}^{2} - 2 \: . \: 3x \: . \: 5 + 5 {}^{2} \\ \boxed{\boxed{\boxed{9x {}^{2} - 30x + 25 }}}$

$d) \\ (2x - 3) {}^{2} \\ (2x) {}^{2} - 2 \: . \: 2x \: . \: 3 + 3 {}^{2} \\\boxed{\boxed{\boxed{4x {}^{2} - 12x + 9 }}}$

$e) \\ (2ab - 3) {}^{2} \\ (2ab) {}^{2} - 2 \: . \: 2ab \: . \: 3 + 3 {}^{2} \\ \boxed{\boxed{\boxed{4a {}^{2} b {}^{2} - 12ab + 9 }}}$

$f) \\ ( \frac{2}{3} a + x) {}^{3} \\ ( \frac{2}{3} a) {}^{3} + 3 \: . \: ( \frac{2}{3} a) {}^{2} \: . \: x + 3 \: . \: \frac{2}{3} ax {}^{2} + {}^{3} \\ \boxed{\boxed{\boxed{ \frac{8}{27} a {}^{3} + \frac{4}{3} a {}^{2} x + 2ax + x {}^{3} }}}$

atte. yrz