Question

x²+(x+3)²=117,find the value of x?​

Answer 1

Answer:

x=27

Step-by-step explanation:

$x {}^{2} + (x + 3) {}^{2} = 117 \\ x {}^{2} + x {}^{2} + 3 {}^{2} = 117 \\ x {}^{4} + 3 \times 3 = 11 \\ x{}^{4} + 9 = 117 \\ x {}^{4} = 117 - 9 \\ x {}^{4} = 108 \\ x = 108 \div 4 \\ x = 27$

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