Question

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Let b = 7. What is the value of the expression 4 b 2 +b−5 ? Enter your answer in the box.

Answer 1

Answer:

let's say with have the equation x+5. When x=1 , then x+5=6. When x=2 then x+5=7. Hope that  Kevin B. · 1 · Mar 19 2015  To write variable expressions on Socratic, simply place hash tags around the  Here's a variable expression with two variables : 3x−2y  If we change the values to x=5 and y=4 , we get

Step-by-step explanation:

Answer 2

Answer: 198

Step-by-step explanation:

b = 7, we are to find the value of $4b^{2}$ + b - 5

since , b is known to be 7 , $b^{2}$ = 7 x 7 = 49

Substituting into the expression , we have

4 ( 49) + 7 - 5

= 196 + 7 - 5

= 198

Therefore , the value of the expression $4b^{2}$ + b - 5 , when b = 7 is 198