Subtract (7x⁸+10x⁶-8x³+12)-(5x⁸-2x⁵+2x³-4)?
1) -2x⁸+10x⁶-2x⁵-10x³+16
2) 2x⁸+10x⁶-2x⁵-10x³+16
3) 2x⁸+10x⁶+2x⁵-10x³+16
4) -2x⁸+10x⁶+2x⁵-10x