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Mariulka [41]
3 years ago
5

Solve 4x^2 - 3 = 3x^2 + 13 by using square roots

Mathematics
2 answers:
Andreyy893 years ago
7 0
X=4, -4 I think! Hope that helps
mina [271]3 years ago
7 0

Answer:

x = - 4, x = 4

Step-by-step explanation:

4x^2 - 3 = 3x^2 + 13 \\  \\ 4x^2 - 3  -  3x^2  -  13 = 0 \\  \\ 4 {x}^{2}  - 3 {x}^{2}  - 16 = 0 \\  \\  {x}^{2}  - 16 = 0 \\  \\  {x}^{2}  -  {(4)}^{2}  = 0 \\  \\ (x + 4)(x - 4) = 0 \\  \\ x + 4 = 0 \:  \: or \:  \: x - 4 = 0 \\  \\ x =  - 4 \:  \: or \:  \: x = 4 \\  \\ x =  - 4, \:  \: 4

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