Answer:
Step-by-step explanation:
1) (x+2)(x+2)=-x-2
[tex]x^{2}[/tex] +2x +2x +4+=-x-2
[tex]x^{2}[/tex]+4x+4+x+2
[tex]x^{2}[/tex]+5x+6
2) [tex]x^{2}[/tex] +4x +12 -16x +24=0
[tex]x^{2}[/tex] -12x+36=0
3) (x-4)(x+1)
x=4 and/or x=-1
4) (x-5)(x-6)
x=5 and/or x=6
5) (x-7)(x+2)
x=7 and/or x=-2
6) [tex]x^{2}[/tex]+3x-10=0
(x-5)(x+2)
x=5 and/or x=2
7) [tex]x^{2}[/tex]+x-20
(x-5)(x+4)
x=5 and/or x=-4
