2(x + 4)2 = 20 solve by square roots
1 answer:
Answer:
x = −
4 ± √
10,
Step-by-step explanation:
2(x + 4)² = 20
=> 2(x + 4) (x + 4) = 20
=> 2x + 8 (x + 4) = 20
=> 2x² + 8x + 8x + 32 = 20
=> 2x² + 16x + 32 = 20
=> 2x² + 16x + 12 = 0
=> Now solve using the quadratic formula:
x = −
4 ± √
10,
Radical form: −
4 ± √
10,
Decimal form: -0.84, -7.16
Hope this helps!
You might be interested in
Answer:
first what the full question and if 25*16/2=200
Step-by-step explanation:
Answer:
x^2 - 6x + 8 x - 2
x
0 8 -2
1 3 -1
2 0 0
3 -1 1
4 0 2
5 3 3
The solutions are in red ⇒ x = 2 and x = 5
Answer:
The answer is
Step-by-step explanation:
C................
Answer:
Hey there!
3n-2=2n
n-2=0
n=2
Let me know if this helps :)
Answer:
Explanation:
(49 x 17) + (49 x 3)
833 + 147 = 980
