Algebrahard · Past Paper
Factorize: a^2 - b^2 - c^2 + d^2 - 2(ad - bc)
A(a-d+b-c)(a-d-b+c)
B(a+d+b+c)(a+d-b-c)
C(a-d)^2 - (b-c)^2
DBoth a and c
✓ Correct Answer: D — Both a and c
a^2-2ad+d^2 - (b^2-2bc+c^2) = (a-d)^2 - (b-c)^2.
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✓ Correct Answer: D — Both a and c
a^2-2ad+d^2 - (b^2-2bc+c^2) = (a-d)^2 - (b-c)^2.
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