Question

alguem me ajudaar pfvr ​

Answer 1

a)

4x²-2x²-x+3x-5=0

2x²+2x-5=0

b)

9x²-7x²-2x+4-1=0

2x²-2x+3=0

c)

2x²-x²+5x-6=0

x²+5x-6=0

d)

x²+2x²-5x-x+1+2=0

3x²-6x+3=0

e)

-x²-2x²+3x+x-4=0

-3x²+4x-4=0