MaxWong

$f'(c)=\dfrac{f(2)-f(0)}{2-0}=\dfrac{(2-2)^2-(0-2)^2}{2}=-2\\ f'(c) = 2c -4\\ \therefore 2c - 4 = -2\\ \begin{array}{rll}2c-4&=&-2\\2c &=&2\\c&=&1\end{array}$

5x5 = 25.

I will do the assumption that you mean $3.2\times 10^{-2} + 3.2\times 10^{-4}+2.8\times 10^{-2}$ because I see the pattern of scientific notation. (PS: I am learning scientific notation in school maths lessons too :) but actually not any teacher knows that I do self-learning for maths and I have already gone through this 3 years ago :P)

$3.2\times 10^{-2} + 3.2\times 10^{-4}+2.8\times 10^{-2}\\ = ​​3.2\times 10^{-2} + 0.032\times 10^{-2}+2.8\times 10^{-2}\\ =(3.2 + 0.032 + 2.8)\times 10^{-2}\\ = 6.032 \times 10^{-2}$

negative sign is identical to the minus sign.

Example: $-5+1$<-- in this case the '-' is the negative sign and the whole thing means 'negative 5 plus 1'.

Example 2: $x - 5$ <-- according to some basic knowledge, this '-' is a minus sign and the whole thing means 'x minus 5'.

Just remember 1 thing. Minus signs cannot go in the very front while negative signs can. :)

young man??

More like a teenager :)

PS: I am 14 years old.

Hello :)

Welcome to the forum!!

$\begin{array}{rl}f(x)=\dfrac{2x+6}{3x}&g(x)=\dfrac{\sqrt x - 8}{3x}\\\end{array}\\ (f-g)(x) = f(x) - g(x) = \dfrac{2x - \sqrt x + 14}{3x}$

The slope of the required graph is negative reciprocal of 2 which is -1/2.

Its y-intercept is 3(Given).

Equation of the required graph is y = -x/2 + 3.

Correct. 

Is it 5 x 10^66?