maths science

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3a+b+5a+2b. 4(e-2)-2(e+1).(2x+1)(x-2) find y if x=-2

  • maths science -

    3a+b+5a+2b = 3a+5a + b+2b = 8a+3b

    4(e-2)-2(e+1) = 4e-8-2e-2 = 2e-10

    if y(x) = (2x+1)(x-2)
    y(-2) = (2(-2)+1)(-2-2) = (-4+1)(-4) = 12

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