Step-by-step explanation:
x² + 2x - 5 = 0
that is the same as
x² + 2x + 1 = 6
(x + 1)² = 6
x + 1 = ±sqrt(6)
x = -1 ± sqrt(6)
x1 = -1 + sqrt(6)
x2 = -1 - sqrt(6)
n² - 20n + 2 = 4
this is the same as
(n - 10)² = 102
n - 10 = ±sqrt(102)
n = 10 ± sqrt(102)
n1 = 10 + sqrt(102)
n2 = 10 - sqrt(102)
Answer: see Steps 1 - 5 (attached)
<u>Step-by-step explanation:</u>
I completed #1 for you. Each image shows one of the steps.
<em>Follow the exact same steps to complete #2 - #5</em>
#6 asks for a double angle.
Add an extra item to step 3: Draw an arc from vertex through the line
--> then draw another arc from B' to the other side of your line (away from the dot) and label that intersection as B''. Use the measure of the vertex to B'' for the remaining steps.
<em>If you need step-by-step images, you will need to post #6 separately as I can only upload 5 images per question.</em>
Answer:
![\frac{x+2}{x+5}](https://tex.z-dn.net/?f=%5Cfrac%7Bx%2B2%7D%7Bx%2B5%7D)
Step-by-step explanation:
Factorise the numerator and denominator
x² - x - 6 = (x - 3)(x + 2)
x² + 2x - 15 = (x - 3)(x + 5)
Hence
= ![\frac{(x-3)(x+2)}{(x-3)(x+5)}](https://tex.z-dn.net/?f=%5Cfrac%7B%28x-3%29%28x%2B2%29%7D%7B%28x-3%29%28x%2B5%29%7D)
Cancel the factor (x - 3) on the numerator/ denominator leaving
← equivalent expression
Answer:
usually I'll go for scientific manner but I'll try three
Answer:
A because if you times 14 by three it would become 42 and always inequalities have to multiply.
Hope I helped :)
Step-by-step explanation: