Answer:

1.No\real\solution

2.x=-2 or x=2

3.x= 0.8125

4.No\real\solution

Step-by-step explanation:

1.expand the expression using (a+b)²=a²+2ab+b²

x²-2x x2 +2² +6=0

2.expand the express using (a+b)²=a²+2ab+b²

x²+2x x2+2²= 4(x+2)

3.Apply multiplicative Distribution law

3 2x-9.6=-7

Re arrange unknown terms to the left side of the equation 3.2x=-7+9.6

Answer:

standard and quadratic form

1.x^2-4x+10=0

a=1,b=-4,c=10

=(-4)^2-4x1x10

=-24

2.x^2+4x+4=4x+8

x^2+4=8

x^2=8-4

x^2=4

x1=-2

x2=2

3.2x^2-6x+7=0

a=2,b=-6,c=7

(-6)^2-4x2x7

=-20

4.-2x^2-4x+7=0

x=-(-4)√(-4)-4x^2x7/2x2

x=4√16-56/4

x=4√-40/4