33.2срочнооалгебра7 класс

Question

33.2срочнооалгебра7 класс

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Answer 1

1)(4х+1) ^3=(4х) ^3+3(4х) ^2+1+3(4х) +1^2+1^3=64х^3+4х^2+12х+1
2) (1-3у) ^3=1-9у+27у^3=-27^3-9у+1
3) (0.6с-5) ^3=(3/5-5) ^3=27/125с^3-27/5с^2+45с-125
4) (1/2d-2) ^3=(1/2d) ^3--3x(1/2d) ^2×2+3×1/2d×2^2-2^3