Question

Evaluate the expression when a= 1/4 and b = 6.
16a2 – 4b=

Answer 1

Step-by-step explanation:

HERE,

a=$\bold{\dfrac{1}{4} }$

b=6

so,

According to the question,

$\bold{16a^2-4b }$

$\bold{16\times(\dfrac{1}{4})^2-4\times 6 }$

$\bold{ 16\times \dfrac{1}{16}-24 }$

$\bold{\cancel{16}\times \dfrac{1}{\cancel{16}}-24 }$

$\bold{1-24 }$

$\bold{ -23 }$