Question

all you need is in the photo PLEASE DON'T DO STEP BY STEP BECAUSE IS SO CONFUSINGductedPLEASEEEEEEEEEEEEEEEEEEEEE

Answer 1

x = 4.2 and -1.2

Step-by-step explanation:

Given the following function

f(x) = x^2 + 13

g(x) = 3x+18

If f(x) = g(x) then;

x^2 + 13 = 3x + 18

x^2 - 3x + 13 - 18 = 0

x^2 - 3x - 5 = 0

Factorize and find x

a = 1, b = -3 and c = -5

`\begin{gathered} x\text{ = }\frac{-(-3)\pm\sqrt[\square]{(-3)^2-4(1)(-5)}}{2} \\ x\text{ = }\frac{3\pm\sqrt[\square]{9+20}}{2} \\ x\text{ =}\frac{3\pm\sqrt[\square]{29}}{2} \\ x\text{ =}(3+5.38)/(2)\text{ or }(3-5.38)/(2) \\ x\text{ = 8.38/2 }or\text{ }-(2.38)/(2) \\ x\text{ = }4.19\text{ or }-1.19 \end{gathered}`

To the nearest tenth, x = 4.2 and -1.2