Notice that half of the coefficient of x is (1/2)(-4), or -2.
Then x^2 - 4x becomes
x^2 - 4x + 4 - 4 = 0, or (x -2)^2 = 4. Then x = -2 plus or minus 2, and the two roots are 0 and -4.
Thus, add 4 to both sides to obtain x^2 - 4x + 4 = 4.
Answer:
110 yards of string
Step-by-step explanation:
Converting the feet of the string of 1 balloon to yard
1 foot = 1/3 yard
6 feet = x
x = 6 × 1/3 yard
x = 2 yard
Hence 1 balloon uses 2 yard of string
Since:
1 balloon = 2 yard of string
55 ballons = x
x = 55 × 2 yard of string
x = 110 yards of string
Hence, for 55 balloons he would need 110 yards of string.
Answer:He drove it for 126 miles
Step-by-step explanation:
Answer:
The Order of operations is PEMDAS: Parentheces, Exponents, Multiplcation, Division, Addition, Subtraction
Step-by-step explanation:
Option A is not correct because it equals 9.
Option B is not correct because it equals -66
Option C is CORRECT because it equals 3 that is your ANSWER
Option D is not correct because it equals 0
PLZ PLZ PLZZZZ MARK BRAINLIEST I WORKED VERY HARD ON THIS
