Question

18 r² - 50=0
solve the quadratic equation using factorisation method .

no spaming​

Answer 1

Given:-

→p(x)=0

→18r²-50=0

$\rule{200}{1}$

To find:-

The Factors of 'r',via Factorization method?

$\rule{200}{1}$

Answer:-

→18r²-50=0

→2(9r²-25)=0

→9r²-25=0

→9r²=25

→r²=$\frac{25}{9}$

→r=$\frac{\sqrt{25}}{9}$

→r=$\frac{5}{3}$

→r=1.66[Approx]

$\rule{200}{1}$

Answer 2

Solving By Factorising ....

$18 {r}^{2} - 50 = 0 \\ \\ = > 2(9 {x}^{2} - 25) = 0\\ \\ > 9 {x}^{2} - 25 = 0 \\ \\ = > {(3x)}^{2} - {(5)}^{2} = 0 \\ \\ = > (3x + 5)(3x - 5) = 0 \\ \\ = > x = + - \frac{5}{3}$