a2 - b2 - (a + b)2
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Given,
= (a + b)(a - b) - (a + b)2
= (a + b)[(a - b) - (a + b)]
= (a + b)[a - b - a - b]
= -2b(a + b).
Hence, a2 - b2 - (a + b)2 = -2b(a + b).
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(x2 + 4y2 - 9z2)2 - 16x2y2
(a + b)2 - a2 + b2
a3 - 8 in the form of factors is :
(a - 2)(a2 - 2a + 4)
(a - 2)(a2 + 2a + 4)
(a - 2)(a2 + 2a - 4)
(a + 2)(a2 - 2a + 4)
27 + 8x3 in the form of factors is :
(3 + 2x)(9 + 6x + 4x2)
(3 - 2x)(9 + 6x + 4x2)
(3 + 2x)(9 - 6x + 4x2)
(3 - 2x)(9 - 6x + 4x2)