Advertisements
Advertisements
प्रश्न
Solve the following equation by factorization
`x^2/(15) - x/(3) - 10` = 0
Advertisements
उत्तर
`x^2/(15) - x/(3) - 10` = 0
⇒ x2 - 5x - 150 = 0 ...`{(∵ - 150 = -15 xx 10),(-5 = -15 + 10):}}`
⇒ x2 - 15x + 10x - 150 = 0
⇒ x(x - 15) + 10(x - 15) = 0
⇒ (x - 15) (x + 10) = 0
EIther x - 15,
then x = 15
or
x + 10 = 0,
then x = -10
∴ x = 15, -10.
APPEARS IN
संबंधित प्रश्न
Solve the equation `3/(x+1)-1/2=2/(3x-1);xne-1,xne1/3,`
Solve the following quadratic equations by factorization:
`(x-3)/(x+3)-(x+3)/(x-3)=48/7` , x ≠ 3, x ≠ -3
`3x^2-x-2=0`
If 1 is a root of the quadratic equation \[3 x^2 + ax - 2 = 0\] and the quadratic equation \[a( x^2 + 6x) - b = 0\] has equal roots, find the value of b.
Solve the following quadratic equation by factorization method : `"x"^2 - 5"x" - 36 = 0`
Solve the following quadratic equation by factorisation:
9x2 - 3x - 2 = 0
Solve the following equation by factorization
21x2 – 8x – 4 = 0
Solve the following equation by factorization
`a/(ax - 1) + b/(bx - 1) = a + b, a + b ≠ 0, ab ≠ 0`
Solve the following equation by factorisation :
`sqrt(3)x^2 + 10x + 7sqrt(3)` = 0
Forty years hence, Mr. Pratap’s age will be the square of what it was 32 years ago. Find his present age.
