find if 7x-4x =9 and xy =3 then find the value of (7x+4y)²
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7x-4x=9
3x=9
x=3
xy=3
put the value of x
3y=3
y=1
put the value of x and y
[7×3+4×1]×[7×3+4×1]
=25×25
=625
3x=9
x=3
xy=3
put the value of x
3y=3
y=1
put the value of x and y
[7×3+4×1]×[7×3+4×1]
=25×25
=625
thakuajay:
Is this right answer?
yes!!
thanks
wlcm
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Malout punjab
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