X² - 15 x + 36 = 0
x² - 12x - 3x + 36 = 0
x( x - 12) - 3( x - 12) = 0
(x - 3)( x - 12) = 0
x - 3 = 0
x = 3
or
x - 12 = 0
x = 12
The solutions are 3 and 12
Answer:
x2 + 10x +25 = (x+5)^2
Step-by-step explanation:
x^2 + 10x
To complete the square
Take the coefficient of x
10
Divide by 2
10/2 =5
Square it
5^2 =25
Add it
x2 + 10x +25
The coefficient of x divided by 2 is the factor we add to x inside the square
(x+5)^2
Answer:

Step-by-step explanation:
The dimensions of a rectangle are length and breadth/width
Here we are given height . Assuming it to be one of the side of the rectangle , we will do the further calculation
Hence one side is
side 1 = 
And the other side is
Side 2 = 
The area of rectangle = side 1 x side 2

Distributing parenthesis


adding similar terms

Hence Area is given by the above polynomial