Y = x² + 7x - 5 Can be written in the form y = ( x + a )² + b. Find the value of a and the value of b.

asked Sep 27, 2022 220k views

5 votes

3.1k points

Please log in or register to add a comment.

3 votes

Answer:

$a=(7)/(2) \\\\b=(49)/(4) \\$

Explanation:

$y=x^2+7x-5\\\\=x^2+2*(7)/(2)*x +(49)/(4) -(49)/(4) -(20)/(4) \\\\=(x+(7)/(2) )^2+(69)/(4) \\\\a=(7)/(2) \\\\b=(49)/(4) \\$

Hal Jarrett answered Oct 2, 2022

3.5k points

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

3.4m questions

4.4m answers