Question

Factorise :
5x² - 7x + 9

​

Answer 1

Answer:

This is your answer u can leave root 131 as it is or can sove more.

Answer 2

Step-by-step explanation:

Solving 5x2-7x-9 = 0 by the Quadratic Formula .

According to the Quadratic Formula, x , the solution for Ax2+Bx+C = 0 , where A, B and C are numbers, often called coefficients, is given by :

- B ± √ B2-4AC

x = ————————

2A

In our case, A = 5

B = -7

C = -9

Accordingly, B2 - 4AC =

49 - (-180) =

229

7 ± √ 229

x = —————

10

√ 229 , rounded to 4 decimal digits, is 15.1327

So now we are looking at:

x = ( 7 ± 15.133 ) / 10

Two real solutions:

x =(7+√229)/10= 2.213

or:

x =(7-√229)/10=-0.813