计算:y=(-2x+100)(x-18)保留计算过程.
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计算:y=(-2x+100)(x-18)保留计算过程.
计算:y=(-2x+100)(x-18)
保留计算过程.
计算:y=(-2x+100)(x-18)保留计算过程.
y=(-2x+100)(x-18)
=-2x²+100x+36x-1800
=-2x²+136x-1800
y=(100-2x)(x-18)
=100x-1800-2x²+36x
=-2x²+136x-1800
y=(-2x+100)(x-18)
= (-2x)* x+(-2x)*(-18)+100*x+ -100*(-18)
= -2x²+36x+100x-1800
= -2x²+136x-1800
计算:y=(-2x+100)(x-18)保留计算过程.
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