Question

1-(a + b)² = [1+(a + b)]×................
1) 1 - a - b
2) (-1 + a - b)
3) 1 - a + b
4) 1 + a + b​

Answer 1

Answer:

1

Step-by-step explanation:

1-a-b.

using the formula a2-b2 = (a+b)(a-b)