determine whether each equation is quadratic or not , if it's quadratic express it in standard form and identify the values of a b and c letter b solve

1)8k+kx²+kx+1=0
2)(5x²-1)+(8+2x-x²)=0
3)(2x-b²)=(x+a)²









solve the following equations by extracting the square roots

1)x²-169=0
2)x²-3=5
3)3(x+3)²=12








solve the following quadratic equations by factoring
1)x²-6x+5=0
2)2x²+3=-7x
3)6x²-5x-4=0​