x2-x-600=0 solve for x
Answers
Answer:
x²-x-600=0
(solve like terms and use transposition method)
(x²-x=x)
x-600=0
x=600+0
x=600
Sorry if its wrong
Answer:
Value of x is 25 or -24
Step-by-step explanation:
Method 1
x²-x-600 = 0
x²-x = 600
adding (1/2)² on both sides
x²-x+(1/2)² = 600+(1/2)²
(x-1/2)² = 600+1/4
= 600×4+1 / 4
= 2400+1 / 4
= 2401 / 4
(x-1/2)² = 2401 / 4
x-1/2 = √(2401 / 4) √2401 = 49 , √4 = 2
= ±49/2
x = 49/2 + 1/2 x = -49/2+1/2
= 49+1 / 2 = -49+1 / 2
= 50 / 2 = -48/2
= 25 = -24
Method 2
x²-x-600 = 0
a=1 , b=-1 , c=-600
x = -b±√(b²-4ac) / 2a
√(b²-4ac) = √(-1² - 4×1×-600)
= √(1+2400)
= √2401
= 49
x = -b±√(b²-4ac) / 2a
= +1±49 / 2
x = 1+49 / 2 x = 1-49 / 2
= 50/2 = -48/2
= 25 = -24