Science, asked by MiraculousBabe, 2 months ago

x²+mx-28=(x-7)(x+4)

Answers

Answered by MrAttitude49

3

Answer:

Plz mark me as a brainliest

Attachments:

Answered by Mysteryboy01

2

$x²+mx-28=(x-7)(x+4) \\ \\ = (x-7)(x+4) \\ \\ = x(x + 4) - 7(x + 4) \\ \\ = {x}^{2} + 4x - 7x - 28 \\ \\ = {x}^{2} - 3x - 28 \\ \\ \\ x²+mx-28 = {x}^{2} - 3x - 28 \\ \\ {x}^{2} - {x}^{2} - 28 - 28 + mx = - 3x \\ \\ mx = - 3x \\ \\ m = - 3$

Previous Question

Next Question

Similar questions

Science, 1 month ago

The food rich in carbohydrates...

Physics, 1 month ago

xplain High energy Ball milling method for the preparation of nanoparticles.

Social Sciences, 1 month ago

the plastic wrappers that we throw away are often dumped into the nearby rivers or water bodies . how can this problem be solved? write the 3 steps government is taking to stop the menace.

Computer Science, 2 months ago

Using a word processor we can format a document...

Math, 2 months ago

if x²+y²=105xy then prove 2log(x-y)=log3+log5+log7+logx+logy...

Chemistry, 8 months ago

Solid substance by cooling the vapour of the solid is called _________...

Math, 8 months ago

sin 50 degree +sin 50 degree + sin 40 degree equals to root 2 into sin 85 degree...

History, 8 months ago

When Mughals invaded India, they brought along their own cuisine. They did not take any Indian food items except this. They adopted the Indian tradition with respect to this item and decided that no feast is complete without this item. It is called Thambulum in Tamil, Thambula in Kannada, Sirih in Indonesian, Bulath in Sinhalese. In South Asia to make this item two cuisines has benn mixed with X...