Question

4ab(a-b)+b(2b-2a²) for a=1 and b=-1​

Answer 1

Given:

•    a = 1
•    b = -1​

To find:

   4ab (a - b) + b(2b - 2a²)

Step-by-step explanation:

 As the values of a and b are given, we will find the value of 4ab (a - b) + b(2b - 2a²).

We will put the value of a and b in he above equation:

• 4 × 1 × -1 (1 - (-1)) + -1 (2 × -1 - 2 × $1^{2}$ )

Now, we will solve them.

• 4  × -1 (1 + 1) + -1 (2 × -1 - 2 × 1)

• -4 (1 + 1) + -1 (2 × -1 - 2 × 1)
• -4 (2) + -1 (2 × -1 - 2 × 1)
• -8 - 1 (2 × -1 - 2 × 1)
• -8 - 1 (-2 - 2)
• -8 - 1(-4)
• -8 + 4
• -4

So the value of  4ab (a - b) + b(2b - 2a²) is -4 if a = 1 and b = -1.

Answer is -4.