Question

fatore as expressões:
4ax-8ay
ax-ay+2x-2y
x^2-64
x^2+6x+9
a^4-b^4
5a^2-20
5x^2+20x+20

Answer 1

Ola Anne

4ax - 8ay = 4a*(x - 2y)

ax - ay + 2x - 2y = a*(x - y) + 2*(x - y) = (x - y)*(a + 2)

x² - 64 = (x + 8)*(x - 8)

x² + 6x + 9 = (x + 3)²

a⁴ - b⁴ = (a² + b²)*(a + b)*(a - b)

5a² - 20 = 5*(a² - 4) = 5*(a + 2)*(a - 2)

5x² + 20x + 20 = 5*(x² + 4x + 4) = 5*(x + 2)²