find the value of(91)^2-(23)^2
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Answered by
17
Step-by-step explanation:
(91)² - (23)²
(90+1)² - (20+3)²
= (8100+180+1) - (400+120+9)
= 8281 - 529
= 7752
Answered by
2
Answer:
According to the formula-a^2-b^2=(a+b)(a-b)
(91)^2-(23)^2=(91+23)(91-23)
(114)(68)=114*68=7752.
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