Question

7) Solve for x:
x2+ 3=7

show reasoning please

Answer 1

The solution set is {-2, 2}

Explanation:

Although I recognize your "x2" as an effort to represent "the square of x," this really should be x^2 or x².

Solve x^2 + 3 = 7 for x:

First isolate x^2; do this by subtracting 3 from both sides, obtaining x^2 = 4.

Next, take the square root of both sides of x^2 = 4:

x = ±√4 = ±2

The solution set is {-2, 2}

Answer 2

2

Explanation:

subtract 3 from both sides so you have

2x=4 then divide it by two

you get x=2