Question

(2x+1)cube - 8ycube
with method​

Answer 1

Answer:

(2x+1)^3 - 8^3

(2x+1-8){(2x+1)^2 +8^2 + 8(2x+1)}

(2x-7)(4x^2+1+4x+16+16x+8)

(2x-7)(4x^2+20x+25)

8x^3+40x^2+50x-28x^2-140x-175

8x^3+12x^2-90x-175