1) What method (s) would you choose to solve the equation:

x2 + 2x - 6 = 0

A. Square roots; there is no x-term.

B. Quadratic formula, graphing; the equation cannot be factored easily since the numbers are large.

C. Factoring; the equation is easily factored.

D. Quadratic formula, completing the square or graphing; the coefficient of x2-term is 1, but the equation cannot be factored.

2) What are the solutions of the equation?

c^2 - 10c = 0

A. 1, - squareroot10

B. 0, - 10

C. 0, sqrt10

D. 0, 10

Question

Mathematics

Nataly Tran

3 June, 08:18

1) What method (s) would you choose to solve the equation:

x2 + 2x - 6 = 0

A. Square roots; there is no x-term.

B. Quadratic formula, graphing; the equation cannot be factored easily since the numbers are large.

C. Factoring; the equation is easily factored.

D. Quadratic formula, completing the square or graphing; the coefficient of x2-term is 1, but the equation cannot be factored.

2) What are the solutions of the equation?

c^2 - 10c = 0

A. 1, - squareroot10

B. 0, - 10

C. 0, sqrt10

D. 0, 10

+1

Answers (1)

Know the Answer?

Santos Gray · Answer 1

1)

x² + 2 x - 6 = 0

(x² + 2 x + 1) - 1 - 6 = 0

(x + 1) ² = 7 / √

x + 1 = + / - √7

x 1 = - 1 + √ 7; x 2 = - 1 - √ 7

Answer: D) Quadratic formula, completing the square or graphing; the coefficient of x² term is 1, but the equation cannot be factored.

2)

c² - 10 c = 0

c (c - 10) = 0

c = 0; c = 10

Answer: D) 0, 10