EOC Practice #19 SPI 3102.3.10.

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Presentation transcript:

EOC Practice #19 SPI 3102.3.10

EOC Practice #19 Find the solution of a quadratic equation and/or zeros of a quadratic function.

x2 + 4x – 21 = 0 A. –3 and 7 B. –7 and 3 C. 3 and 7 D. –7 and –3 Which values of x make the equation true? x2 + 4x – 21 = 0 A. –3 and 7 B. –7 and 3 C. 3 and 7 D. –7 and –3

Solve x2 – 3 = 8x – 19 A. –4 B. –2 C. 2 D. 4

Solve x2 – 6x + 3 = 0 A. B. C. D.

x2 – 10x + 15 = 3x – 15 A. 3 and 10 B. –3 and –10 C. 5 and 6 Which values of x make the equation true? x2 – 10x + 15 = 3x – 15 A. 3 and 10 B. –3 and –10 C. 5 and 6 D. –5 and –6

2x2 + 11x – 21 = 0 A. 7 and –3 B. – and 7 C. –3 and 7 D. –7 and Which values of x make the equation true? 2x2 + 11x – 21 = 0 A. 7 and –3 B. – and 7 C. –3 and 7 D. –7 and

Solve x2 + 3 = 4x + 35 A. 7 and –5 B. –7 and 5 C. 8 and –4 D. –8 and 4

Solve x2 + 10x + 15 = 0. A. B. C. D.

3x2 + 14x + 5 = 0 A. –5 and – B. 5 and C. –3 and –5 D. 3 and 5 Which value of x makes the equation true? 3x2 + 14x + 5 = 0 A. –5 and – B. 5 and C. –3 and –5 D. 3 and 5

The Answers

x2 + 4x – 21 = 0 A. –3 and 7 B. –7 and 3 C. 3 and 7 D. –7 and –3 Which values of x make the equation true? x2 + 4x – 21 = 0 A. –3 and 7 B. –7 and 3 C. 3 and 7 D. –7 and –3

Solve x2 – 3 = 8x – 19 A. –4 B. –2 C. 2 D. 4

Solve x2 – 6x + 3 = 0 A. B. C. D.

x2 – 10x + 15 = 3x – 15 A. 3 and 10 B. –3 and –10 C. 5 and 6 Which values of x make the equation true? x2 – 10x + 15 = 3x – 15 A. 3 and 10 B. –3 and –10 C. 5 and 6 D. –5 and –6

2x2 + 11x – 21 = 0 A. 7 and –3 B. – and 7 C. –3 and 7 D. –7 and Which values of x make the equation true? 2x2 + 11x – 21 = 0 A. 7 and –3 B. – and 7 C. –3 and 7 D. –7 and

Solve x2 + 3 = 4x + 35 A. 7 and –5 B. –7 and 5 C. 8 and –4 D. –8 and 4

Solve x2 + 10x + 15 = 0. A. B. C. D.

3x2 + 14x + 5 = 0 A. –5 and – B. 5 and C. –3 and –5 D. 3 and 5 Which value of x makes the equation true? 3x2 + 14x + 5 = 0 A. –5 and – B. 5 and C. –3 and –5 D. 3 and 5