(x+1)(2) = X(2) + 2x +1

Solve, please :].
P.S. (2)= Squared

 

Eeeeeeeeeasy.

 

Yeah, this is where it sometimes gets complicated. You're right. Just remember when you're squaring a whole equation that it's not squaring the individual number or variable, but you're just re-writing the equation that many times.

(x+1)^2 = (x+1)(x+1)

Then you just solve and simplify using FOIL(First Outer Inner Last). Then combine like terms and you're done. Once you get the hang of it, it becomes second nature.

**EDIT**
Is the equation you posted what you want us to solve? Because the left side is the simplified version of the right side.

Either way, the answer is 2x(2) + 4x + 2, if that's what you wanted us to do.

 

sHe wants us to prove this probably. I've done this a million times in school, and I don't want to make them a million and one :P

 

(X+1)^2=X^2+2x+1
X^2+x+x+1=X^2+2x+1
X^2+2x+1=X^2+2x+1
The original equation is an identity equation. There are infinitely many solutions.

 

If you want us to prove them, then say prove this. Not solve.

 

To solve it is even easier.
*witty little actions here*
...
x∈(-∞,∞) or, the equation is true ∀x∈ℝ

 

ugh guessing its A level maths ?

i got simple one's for now :)

BUT i have a prediction i think the answer is 7!

 

(x+1)^2 = X^2 + 2x +1
(x+1)(x+1) = X^2 + 2x + 1
X^2 + X + X + 1 = X^2 + 2x + 1
X^2 + 2x + 1 = X^2 + 2x + 1

My head hurts... I haven't done math in almost a year. Mainly Algebra... @_@​

 

why are the 2's in brackets?

 

Because they were cold.

 

f(x) = -4(7x) - 5

Find the inverse function, BEOTCHES.

 

that 7x in bracket is supposed to be multiplied by -4?

 

For those that don't know the correct notation for an index would be (for example) x^2 which means "x to the power of 2".

Putting a number or something in brackets implies multiplication and will just cause confusion.

 

Yeah that's why I asked.
If she means "-4 to the power of 7x" then it the answer is:
F(x)=[[2^(14X-1)]/7ln(2)] - 5x