3 (x-1) - 8 = 4 (1+x) + 5 Solve it please?
1 answer:
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Answer:
x = - 6 ±
Step-by-step explanation:
Given
x² + 12x = 1
To complete the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(6)x + 36 = 1 + 36
(x + 6)² = 37 ( take the square root of both sides )
x + 6 = ± ( subtract 6 from both sides )
x = - 6 ± ← exact solutions
notice, the circle is missing 1/4, so the area of it is just 3/4 of the whole area of the circle.