Tìm x
1)\(\left(x-2\right)^2-\left(x-3\right)\left(x+3\right)=17\)
2)\(\left(2x+3\right)^2-\left(2x-1\right)\left(2x+1\right)=10\)
3)\(x^2+6x-247=0\)
4)\(\left(3x-5\right)\left(2x+3\right)-6x^2=7\)
5)\(\left(x-4\right)^2-\left(x-2\right)\left(x+2\right)=36\)
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