calculate the value using the indentities
a)(5a+7b) (5a-7b)
b) (a+2b)²
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1.it is based on formula a^2-b^2
then 5a^2- 7b^2
25a^2-49b^2
2.it is based in formula( a+b)^2
then , a^2+4b^2+ 4ab
hope it helps
then 5a^2- 7b^2
25a^2-49b^2
2.it is based in formula( a+b)^2
then , a^2+4b^2+ 4ab
hope it helps
neha524:
ok
this is based on( a+b)^2
you that which have value a^2+b^2+2ab
than put this formula on second one
you will get the answer
okkkk
mark as brainle ist
ik
ok
okkk
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