4. Find the product of the following: (3x5-15)
(i) (3x - 8)(5x - 1) (ii) (x - 5y)(x + 10y)
(iv) (2x - 8)(3x + 3) (v) (8x - 2)(3x + 6)
(111) (5x + 4)(3x + 7)
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Answer:
(3×5-15)
15-15
=0
Step-by-step explanation:
(1) (3x-8)(5x-1)
15x२-3x-40x-8
15x२-43x-8
(2) (x-5y)(x+10y)
x२+10xy-5xy-50y२
x२+5xy-50y२
(3) (2x-8)(3x+3)
6x२+6x-24x-24
6x२-16x-24
(4) (8x-2)(3x+6)
24x२+16x-6x-4
24x२+10x-4
(5) (5x+4)(3x+7)
15x२+35x+12x+28
15x२+47x+28
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