(1)5x²-20x+20=0 )(2)3x²-12x=-12 (3)方程2x(x-2)=3(x-2)解是—(4)若(2x+3y)²+4(2x+3y)+4=0,则2x+3y的值是
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![(1)5x²-20x+20=0 )(2)3x²-12x=-12 (3)方程2x(x-2)=3(x-2)解是—(4)若(2x+3y)²+4(2x+3y)+4=0,则2x+3y的值是](/uploads/image/z/224584-16-4.jpg?t=%EF%BC%881%EF%BC%895x%26%23178%3B-20x%2B20%3D0+%EF%BC%89%EF%BC%882%EF%BC%893x%26%23178%3B-12x%3D-12+%EF%BC%883%EF%BC%89%E6%96%B9%E7%A8%8B2x%EF%BC%88x-2%EF%BC%89%3D3%EF%BC%88x-2%EF%BC%89%E8%A7%A3%E6%98%AF%E2%80%94%EF%BC%884%EF%BC%89%E8%8B%A5%EF%BC%882x%2B3y%EF%BC%89%26%23178%3B%2B4%EF%BC%882x%2B3y%EF%BC%89%2B4%3D0%2C%E5%88%992x%2B3y%E7%9A%84%E5%80%BC%E6%98%AF)
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(1)5x²-20x+20=0 )(2)3x²-12x=-12 (3)方程2x(x-2)=3(x-2)解是—(4)若(2x+3y)²+4(2x+3y)+4=0,则2x+3y的值是
(1)5x²-20x+20=0 )(2)3x²-12x=-12 (3)方程2x(x-2)=3(x-2)解是—
(4)若(2x+3y)²+4(2x+3y)+4=0,则2x+3y的值是
(1)5x²-20x+20=0 )(2)3x²-12x=-12 (3)方程2x(x-2)=3(x-2)解是—(4)若(2x+3y)²+4(2x+3y)+4=0,则2x+3y的值是
1,2;2,2;3,3/2或2;4,-2;
(1)5(x^2-4x+4)=0
x^2-4x+4=0
(x-2)^2=0
x-2=0
x=2