Answer:
5
Step-by-step explanation:
Step 1: Plug in
11 + (8 - 1)2 - 20
Step 2: Parenthesis
11 + 7(2) - 20
Step 3: Multiply
11 + 14 - 20
Step 4: Combine like terms
5
Answer:
X is 40
Step-by-step explanation:
Look it up
Answer:
Step-by-step explanation:
5²+10²=25+100=125
13²=169
so 5²+10²≠13²
so it is not a right angled triangle.
Answer:
-10
Step-by-step explanation:
8 - 2x^2 =
= 8 - 2(-3)^2
= 8 - 2(9)
= 8 - 18
= -10
C = 169
square is (x + 13)^2
Explanation:
In the form:
ax^2+ bx +c
to complete the square a = 1 is required.
c = (b/2)^2
the square term is b/2
x^2 + 26x + c
a = 1 so we are okay to complete the square.
b = 26
c = (26/2)^2 = 13^2 = 169
finally to complete the square:
x^2 + 26x + 169 = (x+b/2)^2 = (x+13)^2
