Question

Factorizar:
4 x²-49=
48x-36 x²=

Answer 1

a

$4x ^{2} - 49 = \\ 2 ^{2} x ^{2} - 7 ^{2} = \\ (2x) ^{2} - 7 ^{2}=\\ (2x - 7) \times (2x + 7)$

b

$48x - 36x ^{2} = \\ 12x \times (4 - 3x)$