Question

by splitting the middle term factorise the equation 8x²-22x-21​

Answer 1

Answer:

$8x {}^{2} - 22x - 21 = 8 {x}^{2} - 28x + 6x - 21 =$

$= 4x(2x - 7) + 3(2x - 7)$

=(2x-7)(4x+3)