Question

i think of a number and add 7 to it then i multiply the sum by the original number and the result is 60. find the number

Answer 1

Answer:

took x add 7 to it like x+7×x=60

2x+7=60

2x=60-7

2x=53

x=53/2

Answer 2

Answer:

x = -12 , +5

Step-by-step explanation:

i think the number is = x

then

(x+7) × x =60

x^2 + 7x =60

x^2 + 7x -60 = 0

x^2 +12x - 5x - 60 = 0

x ( x + 12 ) -5( x+12) =0

( x+12) (x-5) = 0

x+12 = 0 or x-5 = 0

x = +5 and -12.

and both vaule of x is satisfied upper giving equation .