Question

algebra 2/trig
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Answer 1

Answer:

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Step-by-step explanation:

11)   3x² - 3 = 267

      3x² = 267 + 3

      3x² = 270

      x² = 270 / 3

      x² = 90

     x = ± $3\sqrt{10}$

12) 3r² + 6 = 33

     3r² = 33 - 6

     3r² = 27

       r² = 27/3

       r² = 9

       r = ± $\sqrt{9}$

       r = ± 3

13)   9x² + 10 = 19

       9x² = 19 - 10

      9x² = 9

        x² = 9/9

        x² = 1

       x = ± 1

14) 9r² - 2 = -146

     9r² = -146 + 2

     9r² = -144

       r² = -144/9

       r = ± $\sqrt{\frac{-144}{9}}$

       r = ± $\frac{12i}{3}$

15) 2m² - 1 = 49

     2m² = 49 + 1

     2m² = 50

       m² = 50 / 2

       m² = 25

      m = ± 5

16) 4m² + 7 = 183

     4m² = 183 - 7

     4m² = 176

       m² = 176/4

       m² = 44

       m = ± $\sqrt{44}$

       m = ±2$\sqrt{11}$

17) 8p² + 3 = -93

    8p² = -93 - 3

    8p² = - 96

    p² = -96/8

    p² = -12

    p = ± $\sqrt{-12}$

    p = ± $2i\sqrt{3}$

18) 9p² + 5 = 446

    9p² = 446 - 5

    9p² = 441

      p² = 441/9

      p² = 49

      p = ± $\sqrt{49}$

      p = ± 7