What is the answer for 3r+8=2r+12
2 answers:
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Answer:
x = - 3 ±
Step-by-step explanation:
x² + 6x + 7 = 0 ( subtract 7 from both sides )
x² + 6x = - 7
using the method of completing the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(3)x + 9 = - 7 + 9
(x + 3)² = 2 ( take square root of both sides )
x + 3 = ± ( subtract 3 from both sides )
x = - 3 ±
We are given the following equation:
Subtract both sides by 17
Take the positive/negative square root of both sides
This should be your answer. Let me know if you have any questions, thanks!