taliahankey45 taliahankey45
  • 28-03-2020
  • Mathematics
contestada

Solve the quadratic equation by completing the square.

4x2 + 8x - 7 = 0

Respuesta :

MathPhys
MathPhys MathPhys
  • 28-03-2020

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)

Answer Link

Otras preguntas

Niles Hunt received this information on the statement from his bank. Find the (a) average daily balance-new purchases included, (b) finance charge, and (c) new
Determine whether the sequence converges or diverges. If it converges, give the limit. 9, 27, 81, 243,
please help solve this problem
What is the length of FH in the right triangle below?​
(LC) The following coordinates of four points are shown: P(4, 5), Q(5, 3), R(6, 1), S(3, 6) Which point is closest to the origin along the y-axis? Question 2 op
Please help ASAP I did answer but i got it wrong If you can’t see the answers: A: Denitrification B: Uptake C: Decomposition D: Nitrogen fixation
Q .1 Helen needs to go shopping, she brought 30 dollars in cash, and some change. She had 5 quarters, 12 dimes, 8 nickels, and 11 penny's, she also has 50 dolla
A GIC pays 6% per annum. How long would it take $3000 to grow to $6000? (3 marks)
I don’t really know how to do these could someone help
1. Describe how surveillance of our telephones has changed over the years. 2. Explain what is different about how Silicon Valley companies have built their net