leo4127 leo4127

01-05-2019
Mathematics

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Multiply the polynomials (7x2+5x+7)(4x-6)

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jyothi75 jyothi75

01-05-2019

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MuhammadSaqib MuhammadSaqib

01-05-2019

Answer: 54x - 20x^2 - 128

Step-by-step explanation: (7*2+5x+7) (4x-6)

= (14+5x+7) (4x-6)

= (21 + 5x) (4x - 6)

= 21(4x-6) +5x(4x-6)

= 84x - 128 + 20x^2 - 30x

= 84x -30x -20x^2 -128

= 54x - 20x^2 - 128

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