已知x+5y=6,则x²+5xy+30y的值是()
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已知x+5y=6,则x²+5xy+30y的值是()
已知x+5y=6,则x²+5xy+30y的值是()
已知x+5y=6,则x²+5xy+30y的值是()
x²+5xy+30y
=x(x+5y)+30y
=6x+30y
=6(x+5y)
=6*6
=36
x²+5xy+30y
=x*(x+5y)+30y
=6x+30y
=6*(x+5y)
=6*6
=36
所以x²+5xy+30y的值是36