已知x+5y=6,求:x的二次+5xy+30y

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x²+5xy+30y
=x(x+5y)+30y
=6x+30y
=6(x+5y)
=6*6
=36

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x+5y=6,x的二次+5xy+30y
x的二次+5xy=x(x+5y)+30y=6x+30y=6(x+5y)
=6×6=36

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x^+5xy+30y
=x(x+5y)+30y
=6x+30y
=6(x+5y)
=36

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x²+5xy+30y
=x(x+5y)+30y
=6x+30y
=6(x+5y)
=6*6
=36

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