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JoyGl
@JoyGl
October 2021
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AMaleficent
1) (x+4)^2-x^2=2x+1
x^2+8x+16-x^2=2x+1
8x+16=2x+1
8x-2x=1-16
6x=-15
x=-2,5
2) (x+5)(x-4)-x^2+18=0
x^2-4x+5x-20-x^2+18=0
x-2=0
x=2
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Answers & Comments
x^2+8x+16-x^2=2x+1
8x+16=2x+1
8x-2x=1-16
6x=-15
x=-2,5
2) (x+5)(x-4)-x^2+18=0
x^2-4x+5x-20-x^2+18=0
x-2=0
x=2