1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Inessa05 [86]
3 years ago
5

Solve by completing the squarex squared +14x - 51=0

Mathematics
1 answer:
Nesterboy [21]3 years ago
3 0
x^2 +14x - 51=0\\ \\\Delta = b^{2}-4ac =14^{2}-4*1*(-51)=196+204=400 \\ \\x_{1}=\frac{-b-\sqrt{\Delta }}{2a} =\frac{-14- \sqrt{400}}{2}=\frac{-14-20}{2}= \frac{-34}{2}=-17\\ \\x_{2}=\frac{-b+\sqrt{\Delta }}{2a} =\frac{-14+ \sqrt{400}}{2}=\frac{-14+20}{2}= \frac{6}{2}=3


You might be interested in
Hannah has 19 more bouncy balls than Stefan. Stefan has b bouncy balls. Write an expression that shows how many bouncy balls Han
zhenek [66]

Answer:19+ b

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Shea and her best friend Kelly both babysit during the summer. Shea charges $4 per hour plus a $3 service fee, while Kelly charg
Gnom [1K]
4h+3=The Pay of Shea 3.5h +6= The pay of Kelly 4h+3=3.5h+6 -3 -3 4h=3.5h+3 -3.5h .5h=3 *2 *2 h=? Then stick "h" into one of the original equations and solve for someones pay to get "p" 3.5(h)+6=p OR 4(h)+3 =p
6 0
3 years ago
Read 2 more answers
In the expression -5g12 which part is the base?
Montano1993 [528]
-5 is the base of -5g in this expression
5 0
3 years ago
MAY SOMEONE HELP ME PLZ 8:&:$37,$:&,$
Fed [463]

Answer:

5. y = (x^2) / 2

6. y = -2x^2

6 0
2 years ago
Use the diagram above and round your answer to the nearest hundredth. If a is 6 in. and angle a = 31º, what is b?
Mars2501 [29]
B is the exact same as A
6 0
3 years ago
Read 2 more answers
Other questions:
  • Assume $20,000 is deposited into a savings account. Bedford Bank offers an annual rate of 1% simple interest for five years. Sli
    15·1 answer
  • Simplify the following expressions -5(-7x + 4 + 9y) ​
    9·1 answer
  • there were a total of twenty-one baseball games during the three month season, and four were played at night. If the game are eq
    13·1 answer
  • A customer bought 2 small pizzas that cost $5.95 each. How much was her change from $15.00?
    6·1 answer
  • Kenji earned the test scores below in English class.
    10·1 answer
  • On Monday, the Dairy Barn sold 14 waffle cones for every 6 sugar cones. On Tuesday, the Dairy Barn sold 7 waffle cones for every
    5·2 answers
  • Students observing a caterpillar crawl on a tree noticed that the caterpillar crawled upwards 38 of an inch every minute. The ca
    12·2 answers
  • 200 trials of picking colored blocks, dean picked 63 yellow blocks. Jeanne did the same process and after 100 trials she picked
    6·2 answers
  • Please help. Given the sides of triangle GHI are as follows: GH is 4 cm; HI is 6 cm; and GI is 8 cm. The sides of another triang
    11·1 answer
  • Please solve the table and show your work
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!