Question

Please answer I’m struggling

Answer 1

Step-by-step explanation:

Question 7.

$\frac{{(3 + u)}^{2} }{8}$

[When u = 5]

$= \frac{{(3 + 5)}^{2} }{8}$

$= \frac{ {(8)}^{2} }{8}$

$= \frac{8 \times 8}{8}$

= 8 (Ans)

Question 8.

-2(a - 7)

(Using Distributive property)

= - 2 × a -2 × (-7)

= -2a + 14 (Ans)

Answer 2

Answer:

7. 8

8. -2a+14

Step-by-step explanation:

(Excuse this form of the expression)

7.

u = 5

(3 + u)²

---------

   8

Plug in

(3 + 5)²

---------

   8

  (8)²

---------

   8

64

---- = 8

8

8.

-2(a - 7)

Multiply -2 with each number in the parenthesis

-2a + 14