Asked by sim
algebra grade 8
1.(2x^2-4)(2x^2+4)
2.(5yz+6x^2)(5yz-6x^2)
3.(x^2+y^2)(x^2-y^2)
1.(2x^2-4)(2x^2+4)
2.(5yz+6x^2)(5yz-6x^2)
3.(x^2+y^2)(x^2-y^2)
Answers
Answered by
Steve
these are just difference-of-squares exercises. recall that
(a-b)(a+b) = a^2-b^2
So,
#1: (2x^2)^2 - 4^2 = 4x^4 - 16
now try the others.
(a-b)(a+b) = a^2-b^2
So,
#1: (2x^2)^2 - 4^2 = 4x^4 - 16
now try the others.
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