We have that
x² + 7x + c
Group terms that contain the same variable
(x² + 7x )+ c
Complete the square. Remember to balance the equation
(x² + 7x+3.5² )+ c-3.5²

Rewrite as perfect squares

(x+3.5)²+ c-3.5²
so
c-3.5² must be zero
c-3.5²=0------- c=3.5²------> c=12.25

the answer is
the value of c must be 12.25

5 0

3 years ago

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Solve 4x+6<-6 I could really use the help

aleksandr82 [10.1K]

Answer:

x < -3

Step-by-step explanation:

First subtract 6 from both sides of the inequality.

$4x+6-6$

$4x$

Divide 4 on both sides.

$\frac{4x}{4} < \frac{-12}{4}$

$x$

5 0

2 years ago

What is perimeter and area

miss Akunina [59]

Perimeter is the surrounding of a shape area is the space inside a shape

5 0

3 years ago

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