[tex]Factorize: 3x + 18x^{2} y–27
(b) 5a + 20b
(c ) 7 + 10( − ) − 8( − )^{2}[/tex]
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Step-by-step explanation:
(a) 3x + 18x ^2y - 27
= 3x + 18x^2y - 27
= 3(x + 6x^2y - 9)
(b) 5a + 20b
= (5a + 4b)
(c) 7 + 10 (x + y) - 8 (x + y)^2
Let (x + y) be x
= 7x + 14 - 4x - 8x^2
= 7(1+2 x) - 4x + 1+ 2x)
= (1+2x ) (7 - 4x )
= {1+ 2(x + y) } {7 - 4( x + y)}
= (1+2 x + 2y) (7-4 x-4 y)
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