Factorise using suitable groupings: (a) ax 2 +by 2 +bx 2 +ay 2 please!!!! give in today.
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ax2+bx2+ay2+by2
x2(a+b) +y2(a+b)
(x2+y2)(a+b)
x2(a+b) +y2(a+b)
(x2+y2)(a+b)
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