Solving Quadratic Equations: Quadratic Formula

Question 1

Brahmagupta’s mathematical discoveries and work came about while studying a branch of science. What was he studying?

Revolt · Accepted Answer

C: astronomy

Question 2

A modern equation involving positive and negative integers would be –3 + 4 = 1. How would Brahmagupta have represented this equation?

Revolt · Accepted Answer

D: Three debts added to four fortunes will be one fortune.

Question 3

Brahmagupta’s solution to a quadratic equation of the form ax2 + bx = c involved only one solution. Which solution would he have found for the equation 3x2 + 4x = 6?

Revolt · Accepted Answer

A: x =

Question 4

Brahmagupta solved a quadratic equation of the form ax2 + bx = c using the formula x =, which involved only one solution.

Revolt · Accepted Answer

Using modern methods, the first step in solving the quadratic equation x2 + 7x = 8 would be to put it in standard form by .: subtracting 8 from both sides; What is the second solution?: –8

Question 5

Brahmagupta solved a quadratic equation of the form ax2 + bx = c using the formula x =, which involved only one solution.

Revolt · Accepted Answer

C: ✔ subtracting 8 from both sides

Question 6

✔ –8–1 78

Revolt · Accepted Answer

A: ✔ –8

Solving Quadratic Equations: Quadratic Formula Answers

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