10. Multiply:
(1)(4x2+3x-5)by(2x+3)
(ii)(3x2+4x-5)by(4x2-7x+2)
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Answer:
2x+3(4x²+3x-5)
2x(4x²+3x-5)+3(4x²+3x-5)
8x³+6x²-10x+12x²+9x-15
8x³+18x²-x-15
√3x² + 4x - 5) (4x²-7x+2
= 3x² (4x² - 7x + 2) + ux (4x²-7x + 2) -5(4x2²-7x+2) = 12x²² - 21x²³²³ +6x² + 16x²³-28 x ²²4 + 8x
-20x²+35x-10
= 12x²5x³-22x²-20x² +43x-ID =12x4-5x3. 42x²443x-10
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