91Ó°ÊÓ

When a variable is multiplied by itself we raise the index/exponent of the variable by two, when it is multiplied once more to this product we raise the index to three.

In this fashion variables are written, for example,

$\begin{array}{l}x×x=x^2\\ x×x×x=x^3\end{array}$

Thus$h^2$is$h$raised to the second power.

When a constant is multiplied by a variable we just append the constant in front of the variable.

We are given the expression $h^2−5h+6=0$, so in the middle term, variable$h$ is being multiplied by $-5$.

Like terms are the terms having the same variables and being raised to the same index. A coefficient is the appended number in front of the variable; if no number is shown then we assume it to be 1.

For example$4x$ and$5x$ are like terms.

Unlike terms are the terms not having the same variables and or are raised to a different index.

For example, 4 and$5x$ are unlike terms.

We can add like terms by adding their coefficients, we cannot add the unlike terms.

Now, we are given the expression $h^2−5h+6=0$, so$h^2$ and$-5h$ is being added with 6.

Now, it is given that the expression $h^2−5h+6=0$, is equal to 0.

Thus, the required sentence is:

The number $h$squared minus five times of $h$in addition with the 6 is equal to the zero.