The criteria of a good test should follow along a guideline of gauging where the students knowledge lies. However, it shouldn’t involve the regurgitation of information; nothing will be retained if that is the case. It be something both challenging and rewarding.
I hope this is what you needed :]
Answer:
.
Step-by-step explanation:
Let the smaller root to this equation be . The larger one will equal .
By the factor theorem, this equation is equivalent to
, where .
Expand this expression:
.
This equation and the one in the question shall differ only by the multiple of a non-zero constant. It will be helpful if that constant is equal to . That way, all constants in the two equations will be equal; will be equal to .
Compare this equation and the one in the question:
The coefficient of in the question is (which is omitted.) The coefficient of in this equation is . If all corresponding coefficients in the two equations are equal to each other, these two coefficients shall also be equal to each other. Therefore .
This equation will become:
.
Similarly, for the coefficient of ,
.
.
This equation will become:
.
is the value of the constant term of this quadratic equation.
The new triangle is gonna be bigger. But how big? Let’s look at A.
A= 2,8
Look at A’, it’s 6,24. See a pattern??
Multiply 2,8 by 3. It’s triple the amount, therefore the scale factor is 3.
To double check, multiply by 3 to B and C and see what you get.
So 4*9=36 then you multiply by pi which is 36*3.14=113.04 and then you round it and you will find your answer