If a + b = 7 and a 2 + b 2 = 29, then find the value of ab. could you please tell me the process also
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first a+b=7 eq. 1
next 2a+2b=29 eq 2
2a+2b=29-
a+b=7 =
a+b=22 eq 3
send " b" that side
so,
a=22-b
substitute value of "a" in eq 3
22-b+b=22 -b and +b cancel
22=22
=1
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