2 years ago

Help for brainliest plz

Mathematics

2 answers:

zlopas [31]2 years ago

8 0

It will be 3,4 that will be your answer

Kryger [21]2 years ago

3 0

Answer:

oh uhm that is 3,4 <3

Step-by-step explanation:

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25 point for this question:

KonstantinChe [14]

Answer:

a= $\frac{13}{11}$ b = $\frac{-2}{11}$

Step-by-step explanation:

By equating coefficients on both sides of respective terms.

Given,

$\frac{x-4}{x^2+7x-18}$ = $\frac{a}{x+9}$ + $\frac{b}{x-2}$

Now take lcm on right hand side

$\frac{x-4}{x^2+7x-18}$ = $\frac{a(x-2)+b(x+9)}{x^2+7x-18}$

By equating coefficients of respective terms

x-4 = a(x-2)+b(x+9)

a+b=1 -----1 ; 9b-2a=-4 -----2

Substitute b=1-a in 2

9(1-a)-2a=-4

11a=9+4=13

a= $\frac{13}{11}$

As b=1-a=1- $\frac{13}{11}$ = $\frac{-2}{11}$

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