Question

for a=3, simplify a^2+5a+4 and a^2-5a​

Answer 1

Step-by-step explanation:

Given

a = 3

a²+5a+4

= 3² +5×3+4

= 9+15+4

= 28

a²-5a

= 3²-5×3

= 9-15

= -6

Answer 2

$\huge\underline\bold\green{Answer}$

$a = 3$

${a}^{2} + 5a + 4 \\ {3}^{2} + 5(3) + 4 \\ 9 + 15 + 4 \\ 28$

${a}^{2} - 5a \\ {3}^{2} - 5(3) \\ 9 - 15 \\ - 6$