If (a+b)=15, ab=36. Find a^2-b^2.
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5
Answer:
135
Given,
(a + b) = 15 and b = 36
Find,
a^2 - b^2
Solution,
We know the formula
- (a - b)² = (a + b)² - 4ab
Place the values.
=> (a - b)² = (15)² - 4(36)
=> (a - b)² = 225 - 144
=> (a - b)² = 81
=> a - b = 9
a² - b²
=> (a + b)(a - b)
=> (15)(9)
=> 135.
Hence, result is 135.
#Hope my answer helped you.
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