Question

Sendo A = x²+ x e B = x² - x, o valor de 2AB é:
a) zero
b) 2x⁴- 4x³ - 2x²
c) x⁴ - x³ - x²
d) 2x⁴ - 2x²
e) x⁴– x²
​

Answer 1

$2(( {x}^{2} + x)( {x}^{2} - x)) \\ \\ 2(x {}^{2 {}^{2} } - x {}^{2} ) \\ \\ 2x {}^{4 } - 2x {}^{2}$