Add. 6 1/3 + 4 ¾ + 3 7/12 =
2 answers:
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Answer:
Step-by-step explanation:
Δ =
VΔ = 4 * 8 = 32
a = (- 4 ± 32) *
a' = 7/2
a''= 9/2
Answer:
x = 7 ±
Step-by-step explanation:
Given
4(x - 7)² - 48 = 12 ( add 48 to both sides )
4(x - 7)² = 60 ( divide both sides by 4 )
(x - 7)² = 15 ( take the square root of both sides )
x - 7 = ± ( add 7 to both sides )
x = 7 ±