Math, asked by lohithreddy41, 11 months ago

-2 is root of the quadratic equation x2 -7x+k=0 value of k .

Answers

Answered by XUVBOY0444

2

Step-by-step explanation:

EQUATION GIVEN:

x²-7x+k=0

⇒-2 is a root of the above equation

PUTTING THE VALUE 2 IN PLACE OF x

⇒(-2)²-7×(-2)+k=0

⇒4+14+k=0

⇒k=-18 ans.

Previous Question

Next Question

Similar questions

Math, 6 months ago

solve the following linear equation 3/5y-2=7/10...

Physics, 6 months ago

DOSE POTATO PRODUCE ELECTRICITY ? IF YES DEFINE AND NO DEFINE...

Computer Science, 6 months ago

Create an HTML document containing the following specifications: i. The title of the page should be Cricket. ii. The background color of the page should be teal and the text should be in white. iii. The page should contain a heading “ALL ABOUT CRICKET” written with the font style “Calibri” ,size 15 and color “yellow”. iv. The page should contain an ordered list of 5 of your favourite...

Computer Science, 11 months ago

define javascript???

Math, 11 months ago

2 Solve the following questions. Each question carries 1 mark (3 a) What would be the probability of getting the number 6 when you roll a die b) The runs scored in a cricket match by 9 players are as follows: 18.5, 9. 62, 10, 0, 11,50. 15 Find the median of this data 12 c) Convert into percentage 15...

Biology, 1 year ago

what is the species of dhatura flower??

Chemistry, 1 year ago

The rate constant for the decomposition of hydrocarbons is 2.418 × 10−5 s−1 at 546 K. If the energy of activation is 179.9 kJ/mol, what will be the value of pre-exponential factor.

Chemistry, 1 year ago

In a reaction between A and B, the initial rate of reaction (r0) was measured for different initial concentrations of A and B as given below: A/ mol L−1 0.20 0.20 0.40 B/ mol L−1 0.30 0.10 0.05 r0/ mol L−1 s−1 5.07 × 10−5 5.07 × 10−5 1.43 × 10−4 What is the order of the reaction with respect to A and B?