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3 years ago

50 POINTS. WILL MARK BRAINLIEST IF YOU SHOW WORK. NEED HELP ASAP

Mathematics

2 answers:

katrin2010 [14]3 years ago

8 0

Answer:

For question 4

x²- 5x=14

x²- 5x -14 = 0

1 multiply by -14 is -14

Find L.C.M that when we multiply we get last number that is -14 and when we add or subtract we get the middle number. And that is (-7,2)

Put it into where the -5x is given us

x²- 7x+2x-14=0

You then factorise given us

(x²-7x)(+2x-14)=0

x(x-7)+2(x-7)

(x+2)(x-7)=0

x+2=0

x=-2

(x-7)=0

x=7

therefore, x=-2 or 7

Brrunno [24]3 years ago

5 0

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