2 years ago

Find the roots. 2x ^2 + 4x - 5 =0

Mathematics

1 answer:

Vinvika [58]2 years ago

5 0

Literally the roots equal 0. Is that “X” or the multiplication sign? Because I did it with “X” and it gave me “0”

You might be interested in

Brainliest for correct! y varies inversely with x.

Artist 52 [7]

Answer:

i need help to

Step-by-step explanation:

lol

6 0

2 years ago

Read 2 more answers

<img src="https://tex.z-dn.net/?f=%5Cleft%20%5C%7B%20%7B%7Ba%5E2%20-2a-b%5E2%3D0%7D%20%5Catop%20%7B2b%2B2ab%3D0%7D%7D%20%5Cright

oksian1 [2.3K]

Given :-

a² - 2a - b² = 0
2b + 2ab = 0

To find :-

Value of a and b .

Solution :-

Taking second equation:-

2b + 2ab = 0
2b ( 1 + a ) = 0
2b = 0 or (1+a) = 0
b = 0 , a = -1

Substitute in first equation :-

a² - 2a - b² = 0

When b = 0 ,

a² - 2a - 0² = 0
a² - a = 0
a( a -1) =0
a = 0 , 1

When a = -1 ,

(-1)² - 2*(-1) - b² = 0
1 + 2 - b² = 0
b² = 3
b = ±√3

Answer :-

a = 0,1 ; b = 0
a = -1 , b = ±√3

8 0

2 years ago

How many times can 10 go into 111? lol i need help

ikadub [295]

Answer:

11.1 times

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Rationalise the denominator 5 by√7-√5

taurus [48]

i wasn't sure on how to explain it so i just attached ur answer

4 0

2 years ago

What is a word problem to represent the equation 3/4x=12

Svetach [21]

Answer:

Step-by-step explanation:

John had some number of apples. Niyati his girlfriend wanted 12 of johns apples. John gave niyati 3/4s of his apples what was his starting amount?

3 0

2 years ago