Answer:
Step-by-step explanation:
x²+6x = 18
coefficient of the x term: 6
divide it in half: 3
square it: 3²
add 3² to both sides to complete the square and keep the equation balanced:
x²+6x+3² = 18+3²
(x+3)² = 27
x+3 = ±√27 = ±3√3
x = -3±3√3
Answer:
here is the answer
Step-by-step explanation:
Answer:
x = - 22, x = 4
Step-by-step explanation:
Given
(x + 9)² = 169 ( take the square root of both sides )
x + 9 = ±
= ± 13 ( subtract 9 from both sides )
x = - 9 ± 13
Thus
x = - 9 - 13 = - 22
x = - 9 + 13 = 4
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Subtract 2.25 from 5.40 and get 3.15 divide 3.15 by 35