Answer:


Step-by-step explanation:
Completing the square is a method of rewriting a quadratic equation in the standard form such that it is in vertex form. The first step is to group the linear and quadratic terms, then factor out the coefficient of the quadratic term. After doing so, complete the square, add a value such that the linear and quadratic terms form a perfect square trinomial. Do not forget to balance the equation. The final step is to simplify.

Group,

Complete the square,

Simplify,

Now solve the equation using inverse operations,

Step-by-step explanation:
Given
(2x + 3 )² - (2x + 3) (x - 5)
= 4x² + 6x + 9 - ( 2x (x - 5) + 3(x - 5 ))
= 4x² + 6x + 9 - ( 2x² - 10x + 3x - 15 )
= 4x² + 6x + 9 - 2x² + 10x - 3x + 15
= 2x² + 13x + 24
Hope it will help :)
Answer:
B
Step-by-step explanation:
57 over three means

It is the same as asking how many times does 3 go into 57, or how many miles is their per one gallon.
57 divided by 3 equals 19, so B would be the correct answer.
The answer to the question is B. 8
(12 U.S. quarts) - (8 U.S. cups) = 10 U.S. quarts
Done! your answer is 10 us quarts.