Question

-4x²+{(2x²-3)-(4-3x²)}

Answer 1

Answer : x^2 - 7

Explanation: 5x^2 -4x^2 -7

= x^2 - 2

Answer 2

Answer:

-4x2+(2x2-3-4+3x2)

-4x2+5x2-7

x2-7

x=i