计算:(1) (4x-1)(x+4) (2)(-2x-1/2)(x-1)

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计算:(1)(4x-1)(x+4)(2)(-2x-1/2)(x-1)计算:(1)(4x-1)(x+4)(2)(-2x-1/2)(x-1)计算:(1)(4x-1)(x+4)(2)(-2x-1/2)(x-

计算:(1) (4x-1)(x+4) (2)(-2x-1/2)(x-1)
计算:(1) (4x-1)(x+4) (2)(-2x-1/2)(x-1)

计算:(1) (4x-1)(x+4) (2)(-2x-1/2)(x-1)
(1)(4x-1)(x+4) =4x²+16x-x-4=4x²+15x-4
(2)(-2x-1/2)(x-1) =-2x²+2x-1/2x+1/2=-2x²+3/2x+1/2