transform the following quadratic equation into its standard form ax²+c=0 and determine the values of a,b,c

1..2r(r–2)=8
2..12+5x²=–6x
3..(x+3)(x+3)=0
4..(5+2)²=4
5..(3x–1)²=(x–1)
6..(x+4)(x+2)=16
7..x²+2x+9=0
8..5–2a²=69
9..(t+7)(t–7)=3x
10..25+c²=4c

sana masagutan nyo lahat​
ngayon na kasi deadline namin