Answer:
28. x = 3 31. x = -3
Step-by-step explanation:
4x=12
divide both sides by 4
4x/4 = 12/ 4
x = 3
x/-3 = 1
multiply both sides by -3
x/-3 (-3) = 1 (-3)
simplify both sides
x = -3
2.25
x^2 + 3x =6
Take the coefficient of the x term
3
Divide by 2
3/2 = 1.5
Square it
1.5^2 =2.25
Add this to both sides of the equation
yes
230°
