Grade 128 grade maths
Factorise. 63a^2 –112b^2 ??????????????????????????
Factorise.
63a^2 –112b^2 ??????????????????????????
1 Answer
Harshit Singh
Dear Student
63a^2–112b^2
= 7(9a^2–16b^2)
= 7((3a)^2–(4b)^2)
= 7(3a+4b)(3a-4b)
Using identity: x^2-y^2= (x+y)(x-y)
Thanks
63a^2–112b^2
= 7(9a^2–16b^2)
= 7((3a)^2–(4b)^2)
= 7(3a+4b)(3a-4b)
Using identity: x^2-y^2= (x+y)(x-y)
Thanks
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