9(x+3)²-16(x+2)²=0怎么解?
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![9(x+3)²-16(x+2)²=0怎么解?](/uploads/image/z/1002774-30-4.jpg?t=9%28x%2B3%29%26%23178%3B-16%28x%2B2%29%26%23178%3B%3D0%E6%80%8E%E4%B9%88%E8%A7%A3%3F)
9(x+3)²-16(x+2)²=0怎么解?
9(x+3)²-16(x+2)²=0怎么解?
9(x+3)²-16(x+2)²=0怎么解?
9(x+3)²-16(x+2)²=0
[3(x+3)+4(x+2)][3(x+3)-4(x+2)]=0
(7x+17)(-x+1)=0
x1=-17/7,x2=1
9(x+3)^2=16((x+2)^2
3(x+3)=4(x+2) -3(x+3)=4(x+2)
x=1, -17/7,
x=17 9(x+3)²-16(x+2)²=0
3^2(x+3)^2-4^2(x+2)^2=0
3(x+3)-4(x+2)=0
3x+9+-4x-8=0
-x+1=0
-x=-1
x=1