3 years ago

Solve the quadratic equation by completing the square. 4x2 + 8x - 7 = 0

Mathematics

1 answer:

padilas [110]3 years ago

5 0

Step-by-step explanation:

4x² + 8x − 7 = 0

4x² + 8x = 7

x² + 2x = 7/4

x² + 2x + 1 = 11/4

(x + 1)² = 11/4

x + 1 = ±√(11/4)

x = -1 ± √(11/4)

You might be interested in

At the store, you buy a backpack for $30.42, a binder for $9.89 and a combination lock for $5.75. If you give the cashier $50.00

Shkiper50 [21]

Answer:

$3.94

Step-by-step explanation:

$30.42 + $9.89 + $5.75 = £46.06

$50.00 - $46.06 = $3.94

7 0

3 years ago

Read 2 more answers

What is 3n+2n simplified

Ber [7]

The answer for this is n(3+2)

8 0

3 years ago

Read 2 more answers

The price of patatoes first increased by 10% and then fell by 8%. Find the net percentage change in the price of patatoes.

timofeeve [1]

Answer:

10%-8%=2

2/8=0.25

0.25×100=25

The net percentage is 25%

6 0

2 years ago

Is 1/2 equivalent to 2/4

mina [271]

Yes it is because 1/4 + 1/4 =2/4 and 2/4 equals 1/2

5 0

2 years ago

Read 2 more answers

Veronica's mom left 3/4 of a cake on the table. Her brothers ate 1/2 of it. What fraction of the cake did they eat?

Brums [2.3K]

Answer: 3/8

Step-by-step explanation: Multiply 3/4 and 1/2, or $\frac{3}{4} *\frac{1}{2} \\$ , which equals 3/8

7 0

3 years ago