Find the value of the expression (9x2 + 24x + 16), when x = 12.
Given,
(9x2 + 24x + 16)
x = 12
So, we can also write it as;
= (3x)2 + 2(3x)(4) + (4)2
→ By the formula (a + b)2 we get,
= (3x + 4)2
= [3 (12) + 4]2
= [36 + 4]2
= [40]2 = 1600
Hence the value of the expression is 1600 when x =12.