To factor the polynomial 25x^2 +15x - 4, find two numbers whose product is _ and whose sum is _.

Compare given polynomial with quadratic polynomial

, we get:

a=25, b=15, c=-4

Step1: find product of a and c which is 25*-4= -100

Step2: find two numbers whose product is ac and sum is b that is product is -100 and sum is 15

We see that 20 and -5 satisfy condition of step2.

Step3: Break middle term of into two parts -100x and +15x then proceed factor by grouping.

Hence final answer is .

step-by-step explanation:

divide, then simplify your answer.

1. make -15.66 ÷   5.8 a fraction. then divide.

2. simplify.  

3. final answer.