please factorize the sum s which are marked with circle ❤️
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16. ab(x²+y²)-xy(a²+b²)
abx²+aby²-a²xy-b²xy
abx²-a²xy-b²xy+aby²
ax(bx-ay)-by(bx-ay)
(bx-ay)(ax-by)
17. a²b²+b²+a²+1
a²b²+b²+a²+1
b²(a²+1)+1(a²+1)
(b²+1)(a²+1)
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Answer:
ab(x²+y²) - xy(a² + b²)
= abx² + aby² - xya² - xyb²
=abx² -xya² +- xyb² +aby²
= ax(bx - ya) + by ( bx - ya)
= (bx-ya)(ax+by)
22. a²b² + b² +a² +1
= b²(a²+1) + 1(a²+1)
= (a² + 1)(b² + 1)
brainliest plz.
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