[4(2−x)]2=
To solve this problem, we'll follow these steps:
- Step 1: Simplify inside the bracket.
- Step 2: Apply the square of a binomial formula.
- Step 3: Expand and simplify the expression.
Now, let's work through each step:
Step 1: Simplify inside the bracket:
The expression inside the bracket is 4(2−x). Multiplying through by 4, we have:
=4×(2−x)=8−4x.
Step 2: Apply the square of a binomial formula:
We want to compute (8−4x)2. According to the binomial formula:
(a−b)2=a2−2ab+b2.
Let a=8 and b=4x. Substituting these into the formula gives us:
(8−4x)2=82−2(8)(4x)+(4x)2.
Step 3: Expand and simplify the expression:
=64−64x+16x2.
The correctly expanded expression is:
Therefore, the solution to the problem is 16x2−64x+64.
16x2−64x+64