136k views
1 vote
20x^2-7x-6=0 by factoring

User Katara
by
8.1k points

2 Answers

6 votes

Answer:

20x^2 -x(15-8)-6=0 here 6×20=120an by subtracting 15-8 we got seven where the 15×8 is also 120

Explanation:

now,

20x^2 -15x+8x -6 =0 (here -×-is equal to +thus we write +8)

5x(4x-3) +2(4x-3)=0

(5x+2) (4x-3)=0

Either 5x=-2

X=-2/5

Or

4x=3

X=3/4

User InOut
by
8.1k points
4 votes

Answer:

x = -2/5

x = 3/4

Explanation:

Factoring:

20x²-7x-6=0

20x²+8x - 15x - 6 = 0

4x * (5x + 2) - 3 * (5x + 2) = 0

(5x + 2) * (4x - 3) = 0


Cases:

5x + 2 = 0

4x - 3 = 0

x = -2/5

x = 3/4

User Rohit Kharche
by
7.9k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories