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Question

Solve for x: 1x+1+35x+1=5x+4, x -1, -15, -4

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Solution

Dear student
1x+1+35x+1=5x+45x+1+3x+3x+15x+1=5x+48x+4x+4=5x+55x+18x+4x+4=25x2+5x+25x+58x2+32x+4x+16=25x2+30x+58x2+36x+16=25x2+30x+517x2-6x-11=0Here x=17, b=-6, c=-11x=-b±b2-4ac2a=6±36-4×17×-112×17=6±78434x=1 , x=-1117
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