Question

Necesito responder estas ecuaciones ayudaaa!
X²-8=1/3x²-2
-2x²+8=106
-2x²+5=8x²-211

Answer 1

Explicación paso a paso:

${x}^{2} - 8 = \frac{ {x}^{2} }{3} - 3 \\ 3 {x}^{2} - 3 \times 8 = {x}^{2} - 3 \times 3 \\ 3 {x}^{2} - 24 = {x}^{2} - 9 \\ 2 {x}^{2} = 15 \\ x = ±2.73$

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$- 2 {x}^{2} + 8 = 106 \\ {x}^{2} = - 49 \\ x = ±7i$

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$2 {x}^{2} + 5 = 8 {x}^{2} - 211 \\ 6 {x}^{2} = 216 \\ x = ±6$