Question

4 x (x + 2 ) =14 explain if the statement is correct or incorrect

Answer 1

well you minus 2 from the four and you get 2x(x)=14 then you get 2 squared=14 and 2 squared is not 14 so it is incorrect.

Answer 2

Why?

Answer 3

thanks

Answer 4

\[4x(x+2) = 14\\
4x^2+8x = 14\\
4x^2+8x-14=0\\
4(x^2+2x)=14\\
4(x+1)^2=14+4*1^2\\
4(x+1)^2=18\\(x+1)^2=\frac{9}{2}\\x+1=\frac{\pm3}{\sqrt{2}}\\x=\frac{\pm3}{\sqrt{2}}-1\]

Answer 5

@lowcard2 what you said maid no sense

Answer 6

this is a quadratic equation, I am not quite sure what you were trying to do/

Answer 7

everything that has been posted still makes no sense im confused

Answer 8

I need to find what's wrong with the problem and correct it

Answer 9

kitto are you sure this is exactly how they asked the question?

you asked if a statement with a variable is true. this statement is only true for 2 x values, those are the ones I showed at the end...

you could have gotten the same answers from
\[ax^2+bx+c=0\\then\\x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\]

Answer 10

there is nothing wrong with the problem

this is sort of like asking this...


is this statement true

2+x = 4

well this is true when x = 2

Answer 11

4 x (x + 2) = 14
4x + 2 =14
4x == 12
x =3

Answer 12

you need to read about quadratic equations
4x(x+2) by the distribution propertiy of multiplication is
4x*x+2*4x
4x^2+8x
so you have
4x^2+8x=14
we set equal to 0 and then solve
4x^2+8x-14=0
now we can use the formula I showed
a = 4
b = 8
c = -14

Answer 13

if this were true when x = 3 as you said then
\[4*3(3+2) = 12(5) = 60\ne14\]