Help I am confused on this math photo!!

1) 81

2) 49

3) 16

Step-by-step explanation:

How you do this is divide the b's by 2 then square that answer

x² + 18x + ?

? = 81

(18/2)² = (9)² = 81

x² - 14x + ?

? = 49

(-14/2)² = (-7)² = 49

x² - 8x + ?

? = 16

(-8/2)² = (-4)² = 16

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

vwhat effect does the word head have on the meaning of this passage?

a. it demonstrates how intelligent he was.

b. it shows he was a favorite of the teachers.

c. it indicates he would be a good preacher.

d. it reveals how self-important he was.

how does the choice of the word head contribute to the passage’s tone?

a. it offers a sense of entitlement.

step-by-step explanation: