Question

X^2+3x+5 Find the roots​

Answer 1

Step-by-step explanation:

This equation does not easily factorise so using the general equation y=ax2+bx+c and the formula

x=−b+√b2−4ac2a orx=−b−√b2−4ac2a

then if y=x2+3x−5

a =1, b = 3 and c = -5

x=−3+√32−(−20)2 orx=−3−√32−(−20)2

which comes to the given answer. 

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