A. 2x+5 is factor of 2x^3-x^2-13x+10
B. 2x^3-x^2-13x+10=(x^2-3x+1)(2x+5)+5
C. 2x^3-x^2-13x+10/2x+5=x^2-3x+1+5/2x+5
A is false because for 2x+5 to be a factor, the
remainder would have to be 0, not 5.
B is true because
where P(x) is the polynomial, Q(x) is the quotient,
D(x) is the divisor, and R(x) is the remainder.
C as you have typed it is false because you have typed
it incorrectly. When algebra must be typed all on one
line, you MUST put parentheses around any numerator or
denominator that contains any addition, subtraction,
multiplication or division.
This is what you should have typed for C:
C. (2x^3-x^2-13x+10)/(2x+5)=x^2-3x+1+5/(2x+5) <--CORRECT
for when we don't have to write it all on one line, it
means this:
C.
It is not this, which you typed:
C. 2x^3-x^2-13x+10/2x+5=x^2-3x+1+5/2x+5
for, according to PEMDAS, that means this
C.
<--INCORRECT
which is not at all what you meant.
Anyway C when typed correctly is true because
But in the future, always be careful when typing algebra
all on one line to put parentheses around any numerator
or any denominator which contains any addition, subtraction,
multiplication or division.
Edwin