Back to forum
Desmos Graphing Calculator
Calc
Reference
Copy
Math
·
Advanced Math
·
Equivalent expressions
hard
Which expression is equivalent to
x
2
−
49
x
2
−
10
x
+
21
for
x
>
7
?
A
x
−
3
x
−
7
B
x
+
7
x
−
3
C
x
−
7
x
+
3
D
x
−
7
x
−
3
Which expression is equivalent to \(\frac{x^2-10x+21}{x^2-49}\) for \… | Math SAT Question | Ronan SAT