Pls solve 2nd question:a,d,j,m,s,t.please I really need it,pls solve with explanation.
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Answer:
we can do this with help of factorization
Step-by-step explanation:
a) a*a+6a+9
9a*a=3a,3a
a*a+3a+3a+9=0
a(a+3)+3(a+3)=0
(a+3)(a+3)=0
a+3=0
a=-3
j) 25a*a-49b*b
it is looking in the form of a square minus b square so first expand with the formula
=5a*5a-7b*7b
let us consider a as 5 and b as 7
=(5a+7b)(5a-7b) =0
therefore the required answer is
(5a+7b)(5a-7b) =0
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