Question

Evaluate a a - 4b + 2 if a = 2, b is =1

Answer 1

$aa - 4b + 2 \\ = 2 \times 2 - 4 \times 1 + 2 \\ = 4 - 4 + 2 \\ = 2$

Answer 2

$\huge{ \underline{ \underline \mathfrak \purple{Answer}}}$

a-4b+2

= 2-4(1)+2

= 4-4

= 0