Answer:
QS =25
Step-by-step explanation:
QR + RS = QS
18 + (x-11) =2x-11
7 +x =2x -11
18=x
Plug in x
2(18) -11
36-11
QS=25
18 + (18-11) = 2(18)- 11
18+ 7 = 36 -11
25= 25
True
Answer:
Step-by-step explanation:
Hello,
![2(x+3)^2-10\\=2[(x+3)^2-5]\\=2[(x+3)^2-(\sqrt{5})^2]\\\\=2[(x+3+\sqrt{5})(x+3-\sqrt{5})]](https://tex.z-dn.net/?f=2%28x%2B3%29%5E2-10%5C%5C%3D2%5B%28x%2B3%29%5E2-5%5D%5C%5C%3D2%5B%28x%2B3%29%5E2-%28%5Csqrt%7B5%7D%29%5E2%5D%5C%5C%5C%5C%3D2%5B%28x%2B3%2B%5Csqrt%7B5%7D%29%28x%2B3-%5Csqrt%7B5%7D%29%5D)
Hope this helps
Answer:
a) 2x² - x + 3 = x(2x + 1) - 2x
<=> 2x² - x + 3 = 2x² + x - 2x
<=> 3 - x = - x
<=> 3 = 0
=> no solution
b) x/2 - x/3 - x/4 = 1/12

=> the euqation has the solution x = 1
c) |x - 5| = 2|x|
=> x - 5 = 2x
or x - 5 = -2x
<=> x = -5
or 3x = 5
<=> x = -5
x = -5or x = 5/3
d) defined conditions: 2 - x 》 0
<=> x 《 2
we have:

<=> x = 0 (because x 《 2)
e)

<=> x = -1/4
Answer:
The algebraic method is a collection of several methods used to solve a pair of linear equations with two variables.
Step-by-step explanation: