Question

2. If a = -2. find the values of the following polynomials with full solutions
(1) 7-3a​
(2)a² +1
(3) 4-a²

Answer 1

Answer:

(1)13 (2)5 (3)0

Step-by-step explanation:

1)7-3a=7-3(-2)=7+6=13

2)a²+1=(-2)²+1=4+1=5

3)4-a²=4-(-2)²=4-4=0

Answer 2

Answer:

if a=-2

1) 7-3a= 7-3(-2) = 7+6 = 13

2) a²+ 1 = (-2)²+ 1 =4+1=5

3) 4 - a²= 4 -(-2)²= 4+(- 4)=4 - 4=0