How do you solve #4x^2+17x+15=0#?
Method 1. Use the improved quadratic formula
There are 2 real roots:
Method 2. Use the new Transforming Method (Socratic, Google Search)
Proceeding. Find the 2 real roots of y', then, divide them by a = 4.
Find 2 real roots, bot negative (Rule of signs), knowing the sum (-b = -17), and the product (ac = 60). They are - 5 and - 12.
The 2 real roots of y are:
Factorise the quadratic trinomial.
Find factors of
The signs are all positive.
Either factor can be equal to