a b bracket open X square + Y square bracket close + xy bracket open a square + b square bracket close
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ab(x^2 + y^2) + xy(a^2 + b^2)
= ab x^2 + ab y^2 + xy a^2 + xy b^2
= ax(bx + ay) + by ( ay + bx)
= (ax + by)(bx + ay)
Answered by
2
Answer:
Step-by-step explanation:
ab(x²+y²)+xy(a²+b²)
=abx²+a²xy+aby²+b²xy
=ax(bx+ay)+by(ay+bx)
=ax(bx+ay)+by(bx+ay)
=(bx+ay)(ax+by)
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