(1) (a + b)² - (a - b)²
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Answered by
0
Answer:
4ab.
Step-by-step explanation:
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Answered by
2
Answer:
a²-b².Hope it will help you.
Step-by-step explanation:
(a+b)²-(a-b)²
= a²+2ab+b²- a²-2ab+b²
=a²-a²+2ab-2ab-a²+b²
= 0 + 0 - a²+b²
= a²-b².
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