Factorise ab (x²+1) + x(a²+b²).
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1
Answer:
ab(x
2
+1)+x(a
2
+b
2
)
=abx
2
+ab+a
2
x+b
2
x
=abx
2
+a
2
x+ab+b
2
x
=ax(bx+a)+b(bx+a)
=(bx+a)(ax+b)
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