+1495 True or false?
1-When one equation is of the first degree and the other is of a higher degree, they are best solved by Addition or subtraction
True or False
2-If a line is tangent to a circle, the roots of their equations are imaginary
+129845 1. Not neccessarily
For instance
y = x^2 - 25 (1)
x - 5 = 0 ⇒ x = 5 (2)
Is best solved by substituting (2) into (1) ......so....False
2. False.....look at the graph of these :
https://www.desmos.com/calculator/3jcfobc82b
x^2 + y^2 = 25
x - 5 = 0
Both of the equations have real roots
