Question

26. Multiply:
1) (7x - 4x2 + 2x3 – 5) by(3x-2)

Answer 1

Answer:

(4x2 – 4x – 7)(x + 3)

(4x2 – 4x – 7)(x) + (4x2 – 4x – 7)(3)

4x2(x) – 4x(x) – 7(x) + 4x2(3) – 4x(3) – 7(3)

4x3 – 4x2 – 7x + 12x2 – 12x – 21

4x3 – 4x2 + 12x2 – 7x – 12x – 21

4x3 + 8x2 – 19x – 21

Answer 2

Answer:

7(3x²-5x+2)

Step-by-step explanation:

=(7x-8+6-5)(3x-2)

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

=21x²-14x-21x+14

=21x²-35x+14

.•.=7(3x²-5x+2)