Question

will give brainliest


Solve for x.

3
x2
− 2 = 7
A) x = 1, x = 3
3
B) x = 1, x = −3
3
C) x = −3
3
, x = 3
3
D) x = 1, x = −3
3
, x = 3
3
2)
Solve for x.

4x2
+ 2 = 9
A) x = 7
7
, x = −7
7
B) x = 7
2
, x = −7
2
C) x =
7
2
7
, x = −
7
2
7
D) x =
7
7
2
, x = −
7
7
2
3)
Solve for x.

3x2
− 5 = 10
A) x = 15
5
, x = −15
5
B) x = 15
10
, x = −15
10
C) x =
15
2
2
, x = −
15
2
2
D) x =
15
5
2
, x = −
15
5
2
4)
Solve for x.

6 +
3x2
= 18
A) x = 6, x = −6
B) x = 12, x = −12
C) x = 18, x = −18
D) x = 24, x = −24

Answer 1

Answer:

• D, A, C, D

Step-by-step explanation:

Q1

• 6 + ∛3x² = 18
• ∛3x² = 12
• 3x² = 12³
• 3x² = 1728
• x² = 1728/3
• x² = 576
• x = √576
• x = ±24

Option D

Q2

• ∛3x² - 5 = 10
• ∛3x² = 15
• 3x² = 15³
• 3x² = 3375
• x² = 1125
• x = √1125
• x = ± 15√5

Option A

Q3

• 3∛x² - 2 = 7
• 3∛x² = 9
• ∛x² = 3
• x² = 3³
• x² = 27
• x = √27
• x = ±3√3

Option C

Q4

• ∛4x² + 2 = 9
• ∛4x² = 7
• 4x² = 7³
• 4x² = 243
• x² = 243/4
• x = √243/4
• x = ± 7√7/2

Option D