Answer:
49/4
Step-by-step explanation:
x^2+7x=4
Take the coefficient of x
7
Divide by 2
7/2
Then square it
(7/2) ^2 = 49/4
Add this to both sides of the equation to complete the square
you could do 27+x=30
we cant see the triangles
It would b ' A B F and G' the total number of pencils would be 274
