Question

1. if x =-3 calculate the value of 2x squared +x

2. solve 3x-3=x+5

3. solve 5x+4=3

Answer 1

2*-3 is -6. then squared it is +36 and finally +-3 would get you to +33.

Answer 2

2x² = -3² x 2 = 9 x 2 = 18
18 + -3 = 15 (as adding a negative means subtracting)
2x² + x = 15