Percy solved the equation x2 + 7x + 12 = 12. His work is shown below. Is Percy correct? Explain. 1. (x + 3)(x + 4) = 12 2. x + 3 = 12 or x + 4 = 12

{x +4} {x+3} =0

Step-by-step explanation:

The equation is given as :

x² + 7x + 12 =0

Find multiples of 12 that can add to give +12 3 * 4

The equation can then be written as;

x² + 3x + 4x + 12 = 0  factorize

x{ x + 3 } + 4 { x +3 } = 0

{x+4 } {x + 3} = 0

Answer : {x +4} {x+3} =0

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225

first, we define the variables:

x: number of years after 1950

f (x): amount of vinyl sold.

then, with the variables defined, we have:

68594 vinyl records were sold in 1958 > f (8) = 68594

91299 vinyl records were sold in 1961 > f (11) = 91299

38720 vinyl records were sold in 1952 > f (2) = 38720

161743 vinyl records were sold in 1967 > f (17) = 161743

read more on -

step-by-step explanation: