Question

If a = 2, b = 3 and c = 4, what is the numerical value of the expression (b-c)^2 + a(b+c)?

Answer 1

• 15

Explanation:

We know that:

• Given expression:
  `(b-c)^2 + a(b+c)`
• a = 2
• b = 3
• c = 4

Solution:

• 
  `(b-c)^2 + a(b+c)`
• =>
  `(3-4)^2 + 2(3+4)`
• =>
  `(-1)^2 + 2(7)`
• =>
  `[-1(-1)] + 2(7)`
• =>
  `1 + 14`
• =>
  `15`

Answer 2

15

Explanation:

(3 - 4)^2 + 2(3 + 4)

(-1)^2 + 2(7)

1 + 14

15