Question

4p=99^2-39^2
Please solve dis

Answer 1

4p=99²-39²
4p=(99-39)(99+39)
4p=60×138
p=60×138/4
p=2070

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Answer 2

⇒4p = (99)²- (39)²

⇒4p = (99+39)(99-39)

⇒4p = 138 x 60

⇒4p = 8280

⇒p = 8280/4

⇒ p = 2070