verify the identity (a+b)(a-b)=a²-b² a=9.8cm,b=2.2cm
Answers
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Step-by-step explanation:
(9.8+2.2)(9.8-2.2)=9.8²-2.2²
=11×7.6=96.04-4.84
83.6=83.6
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Question:
verify the identity (a+b)(a-b)=a²-b² a=9.8cm,b=2.2cm
Given:
a=9.8cm, b=2.2cm
Answer:
LHS:
=(a+b)(a-b)
=(9.8+2.2)(9.8-2.2)
=12×7.6
=91.2
RHS:
=(9.8)²-(2.2)²
=96.04-4.84
=91.2
LHS=RHS
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