Question
Describe the error student made in multiplying and simplifying
Hint:
The expansions of certain identities are:
We are asked to describe the error made by the student and simplify the expression.
The correct answer is: The error made by the student is that he/she cut out the value x from the term which is not possible
Step 1 of 2:
The given expression is
Simplify the expression using identities,
Step 2 of 2:
The error made by the student is that he/she cut out the value x from the term which is not possible. To cut off, the values has to be common for every single term in the expression which is not the case here.
To cut off a value from an expression, the value should be common for each and every term in the expression.
Related Questions to study
The LCM of the polynomials 
is.
The LCM of the polynomials is.
Write the equation in slope-intercept form of the line that passes through the points (5, 4) and (-1, 6).
The slope intercept form is y = mx + b, where m represents the slope and b represents the y-intercept. We can draw the graph of a linear equation on the x-y coordinate plane using this form of a linear equation.
Steps for determining a line's equation from two points:
Step 1: The slope formula used to calculate the slope.
Step 2: To determine the y-intercept, use the slope and one of the points (b).
Step 3: Once you know the values for m and b, we can plug them into the slope-intercept form of a line, i.e., (y = mx + b), to obtain the line's equation.
Write the equation in slope-intercept form of the line that passes through the points (5, 4) and (-1, 6).
The slope intercept form is y = mx + b, where m represents the slope and b represents the y-intercept. We can draw the graph of a linear equation on the x-y coordinate plane using this form of a linear equation.
Steps for determining a line's equation from two points:
Step 1: The slope formula used to calculate the slope.
Step 2: To determine the y-intercept, use the slope and one of the points (b).
Step 3: Once you know the values for m and b, we can plug them into the slope-intercept form of a line, i.e., (y = mx + b), to obtain the line's equation.
=1 why is a valid identity under the domain of all real numbers except 
.
is:
, then their HCF can be ________.
Solve for x
gives the diameter d, in inches, of a rope needed to lift a weight of w, intons. How much weight can be lifted with a rope that has a diameter of 4in?
