Question

It’ll be a miracle if someone helps

Answer 1

Answer:

Answer: ½

Step-by-step explanation:

${ \tt{ {d}^{2} - b }}$

• d is ¼
• b is -7/16

$\dashrightarrow \: { \tt{ {( \frac{1}{4} )}^{2} - ( - \frac{7}{16}) }} \\ \\ { \tt{ = \frac{1}{16} + \frac{7}{16} }} \\ \\ = { \tt{ \frac{(1 + 7)}{16} }} \\ \\ = { \tt{ \frac{8}{16} }}$

» Reduce the denominator and numerator by dividing all by 8/8

$={ \tt{ \frac{8}{16} \div \frac{8}{8} }} \\ \\ = { \tt{ \frac{1}{2} }}$

Answer 2

Answer:

  1/2

Step-by-step explanation:

Put the values where the variables are and do the arithmetic.

  $d^2-b=\left(\dfrac{1}{4}\right)^2-\left(-\dfrac{7}{16}\right)=\dfrac{1}{16}+\dfrac{7}{16}\\\\=\dfrac{1+7}{16}=\dfrac{8}{16}=\boxed{\dfrac{1}{2}}$