a²-b² where a =2 b=1 find pls
Answers
Answered by
1
Answer:
3
Step-by-step explanation
(a + b) (a - b)
(2 + 1) (2 - 1)
(3)(1)
3
Answered by
0
Answer:
3
Step-by-step explanation:
Given
a = 2
b = 1
a² - b² = (a + b)(a - b) (Theorem)
(a + b)(a - b) = (2 + 1)(2 - 1) ⇒ (a + b)(a - b) = (3)(1) ...(i)
a² - b² = (3)(1) (Substituting (i))
⇒ 3
Hope this answer helps you.
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