The answer is D and if not please search it up on the Google internet
Answer:
2k^2+12
Step-by-step explanation:
remove parentheses, simplify calculate
Answer:
7k
Step-by-step explanation:
-k - -(8k): the - sign cancels out the - in 8k so it would only leave -k+8k=7k
Answer:
(x+5)² = 16
Solution: -1 and -9
Step-by-step explanation:
Given the quadratic equation X^2+10x+22=13
Subtract 22 from both sides
X^2+10x+22-22=13-22
x^2+10x = -9
Complete the square
Add the square of half of coefficient of x to both sides
coefficient of x = 10
half of coefficient of x = 10/2 = 5
square of half of coefficient of x= 5² = 25
Add 25 to both sides
x²+10x + 25 = -9+25
(x+5)² = 16
Hence the required equation is (x+5)² = 16
(x+5)² = 16
square root both sides
√(x+5)² = √16
x+5 = √16
x +5 = ±4
x = +4 - 5 and -4-5
x = -1 and -9
Hence the solution to the equation is -1 and -9
12x+1=-7
-1 -1
12x=-6
/12 /12
x=-1/2 or x=-0.5
