The product of two consecutive even number is 168. find the numbers

even numbers can be represented as 2n where n is an integer

consecutive even integers are 2 apart (2,4,6,8, etc)

so 2 consecutive even integers can be represeted as 2n and 2n+1

their product is 168, so

(2n)(2n+2)=168

expand/distribute

4n²+4n=168

factor out a 4

4(n²+n)=168

divide both sides by 4

n²+n=42

solve by completing the square

take 1/2 of the linear coefient and square it

the linear coeffient is 1 so 1/2 of 1 is 1/2, and (1/2)^2=1/4

add 1/4 to both sides

n²+n+1/4=42+1/4

factor perfect square trinomial

square root both sides

subract 1/2 from both sides

n=-0.5+6.5 or -0.5-6.5

n=6 or -7

if n=6, then 2n=12 and 2n+2=12+2=14

if n=-7, then 2n=-14 and 2n+2=-14+2=-12

so the 2 numbers are 12 and 14 or -12 and -14 (the problem didn't specify the sign of the numbers)

4+n=5

step-by-step explanation:

this is because the four is four hours and the n represents the 1 extra hour over the weekend.

b= i'm srry i don't know that one.

4+n=5 n=1 because if vernon plays 5 hours a week then 4+1=5 hours.

hope this : )

the solution is 12x-6y