Question

solve:[4x-7] [4x-11] using algebric identities

Answer 1

Answer:

16x²-44x-28X+77

=16x²-72+77

Answer 2

Algebraic identity:

(x + a) (x + b) = x^2 + (a + b)x + ab

Solution:

[ 4x + (-7) ] [ 4x + (-11) ]

= (4x)^2 + [ (-7) + (-11) ] (4x) + (-7) (-11)

= 16x^2 - 18 (4x) + 77

= 16x^2 - 72x + 77