evaluate 72square using identities
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Answered by
4
Answer:5184
Step-by-step explanation:(70+2) square
=(70) square+2^70^2+(2) square
=4900+280+4
=5184
Answered by
2
(72)^2
=(70+2)^2[using identity (a+b)^2=a^2+b^2+2ab]
=(70)^2+(2)^2+2×70×2.
=4900+4+280
=5184.
(999)^2
=(1000-1)^2
=998001
=(70+2)^2[using identity (a+b)^2=a^2+b^2+2ab]
=(70)^2+(2)^2+2×70×2.
=4900+4+280
=5184.
(999)^2
=(1000-1)^2
=998001
megjraj:
wrong answer
evaluate identities with 999square
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