Раскройте скобки.
a)-2*(x-4)
б)a*(-3b+2c-7)
в)-1,5*(2x-4y)
г)3*(-4x+6)-(1-12x)
в)2*(7-y)+7*(x-2)
a)-2*(x-4)
б)a*(-3b+2c-7)
в)-1,5*(2x-4y)
г)3*(-4x+6)-(1-12x)
в)2*(7-y)+7*(x-2)
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Answers & Comments
Ответ:
a)-2*(x-4)=−2x+8
б)a*(-3b+2c-7)=−3ab+2ac−7a
в)-1,5*(2x-4y)=−3x+6y
г)3*(-4x+6)-(1-12x)=−12x+18−(1−12x)=−12x+18−1−(−12x)=−12x+18−1+12x=−12x+17+12x=17
в)2*(7-y)+7*(x-2)=14−2y+7(x−2)=14−2y+7x−14=−2y+7x
Объяснение: