1.

4x² - 7x - 15=0 in quadratic formuls​

Answer»

Answer:

4x^2-7x-15=0

4x^2-(12-5)x-15=0

4x^2-12x+5x-15=0

4x(x-3)+5(x-3)=0

(4x+5) (x-3)=0

4x+5=0      x-3=0

x=-5/4   x=3

Step-by-step EXPLANATION:



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