Question

A) (2x+3).(4x-5)= B) (6x²-4).(6x²+4)= C) (x²-x-1).(x+1)=

Answer 1

A) (2+3/X) • (4-5/X) = 5X • X = 5X²

B) (6-4/X) • (6+4)X²) = 2X • 10X² = 20X³

C) (-1/X²-X) • (1/X) = X • X = X²