Question

2 x²- x +3

a) 2

b)-1 ​

Answer 1

a) x=2

2. 2² - 2 + 3

2.4 - 2 + 3

8 - 2 + 3

9

b) x= -1

2. (-1)² - (-1) + 3

2. 1 - (-1) + 3

2 + 1 + 3

6