$25. 25 x 3 is 75. Plus the 100 is 175. 200 - 175 is $25
Answer:
x₁ = - 5, x₂ = 5
Step-by-step explanation:
x^2 + 3 = 28
x^2 = 28 - 3
x^2 = 25
x = ± 5
x = - 5
x = 5