Math, asked by aa5775512, 2 days ago

Solve the following quadratic equation by completing the square. .
x²-4x-21=0

Answers

Answered by soniyamohite52

1

Answer:

X²-4x-21 =0

X²-7x+3x-21

X(x-7) + 3(x-7)

(x+3)(x+7)

-3 and - 7 are roots of the equation

Previous Question

Next Question

Similar questions

English, 1 day ago

The new student asked the old one, “Do you know my name ?” (a) The new student asked the old one if he knew his name. (b) The new student asked the old one that whether he knew his name. (c) The new student asked the old one did he know his name. (d) The new student asked the old one if he knows his name.

English, 1 day ago

Write down the symptoms of novel corona virus.

Social Sciences, 1 day ago

This Portuguese traveller discovered Sea roate to india in 1498AD...

Geography, 2 days ago

tropical deciduous trees shed their leaves in the dry season why ?

Biology, 2 days ago

What are difference between parent cell and daughter cells in meiosis'?

Math, 8 months ago

. UTS 6 PNM A 7 FDC ): KIH...

Social Sciences, 8 months ago

draw a diagram to show horizontal power sharing??

English, 8 months ago

Fill in the blanks with collective nouns from the box. regiment, fleet, clump, chain, company, brood, clutch, horde, set, muster, pair, herd, mob, crew, bouquet, flock, gaggle, board, bundle, heap, team, covey 5.A_____of trees 6.A_____of sailors 7.A_____of chickens 8.A_____of mountains ...