Solve seven x square 2 plus twenty x negative three equals? 7x2+20x-3=

Question

Mathematics

Karson Buchanan

12 November, 00:39

Solve seven x square 2 plus twenty x negative three equals? 7x2+20x-3=

+1

Answers (1)

Know the Answer?

Cassius · Answer 1

7x² + 20x - 3 = 0

x = - (20) + / - √ ((20) ² - 4 (7) (-3))

2 (7)

x = - 20 + / - √ (400 + 84)

14

x = - 20 + / - √ (484)

14

x = - 20 + / - 22

14

x = - 20 + 22 x = - 20 - 22

14 14

x = 2 x = - 42

14 14

x = ¹/₇ x = - 3