The root of the quadratic equation 3(x+3)^2=48
1,-7
1,7
-1,7
-1,-7
Answers
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2
Answer:
x=7
x=−1
Step-by-step explanation:
Rearrange:
Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
3*(x-3)^2-(48)=0
Step by step solution :
STEP
1
:
Equation at the end of step 1
3 • (x - 3)2 - 48 = 0
STEP
2
:
2.1 Evaluate : (x-3)2 = x2-6x+9
STEP
3
:
Pulling out like terms
3.1 Pull out like factors :
3x2 - 18x - 21 = 3 • (x2 - 6x - 7)
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