Advertisements
Advertisements
प्रश्न
Solve :
(x+5)(x-5)=24
योग
उत्तर
Given: (x+5)(x-5)=24
`=> x^2 - 5^2 = 24` .............since (a - b) (a + b) = a2 - b2
`=> x^2 - 25 = 24`
`=> x^2 = 49`
`=> x = ± 7`
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
Find the value of a, b, c in the following quadratic equation : 2x2 ‒ x ‒ 3 = 0
Solve the quadratic equation x2 – 3(x + 3) = 0; Give your answer correct to two significant figures.
Solve : x(x – 5) = 24
Solve : 2(x² – 6) = 3(x – 4)
2x2 – 9x + 10 = 0, When
(1) x∈ N
(2) x∈ Q
Without solving comment upon the nature of roots of each of the following equation:
2x2 + 8x + 9 = 0
`3sqrt7x^2+4x-sqrt7=0`
`4/x-3=5/(2x+3),x≠0,-3/2`
Is x = –3 a solution of the quadratic equation 2x2 – 7x + 9 = 0?
If x + y = 5 and x - y = 1, then find the value of x.
