![3 {x}^{2} + 12x = 9 \\ 3 {x}^{2} + 12x + ( - 9) = 9 + ( - 9) \\ 3 {x}^{2} + 12x - 9 = 9 - 9 \\ 3 {x}^{2} + 12x - 9 = 0 \\ 3 ({x}^{2} + 4x - 3) = 0 \\ 3 ({x}^{2} + 4x - 3) \times \frac{1}{3} = 0 \times \frac{1}{3} \\ ({x}^{2} + 4x - 3)3 \times \frac{1}{3} = 0 \times \frac{1}{3} \\ ({x}^{2} + 4x - 3) \times 1 = 0 \\ {x}^{2} + 4x - 3 \ = 0 \\ {x}^{2} + 4x - 3 + 3\ = 0 + 3 \\ {x}^{2} + 4x + 0\ = 3 \\ {x}^{2} + 4x \ =3 \\ {x}^{2} + 2(2)x + 2^{2} = 3 + {2}^{2} \\ {(x + 2)}^{2} = 3 + 4 \\ (x + 2) ^{2} = 7 \\ { ({(x + 2)}^{2}) }^{ \frac{1}{2} } = 7 ^{ \frac{1}{2} } \\ x + 2 = \ \sqrt[2]{ {7}^{1} } \\ x + 2 = \sqrt[2]{7} \\ x + 2 = \sqrt{7} \\ x + 2 + ( - 2) = \sqrt{7} + ( - 2) \\ x + 2 - 2 = ( - 2) + \sqrt{7} \\ x + 0 = - 2 + \sqrt{7} \\ x = - 2 + \sqrt{7}](/tpl/images/0598/0322/871cc.png)
Complete the square to solve 3x2 + 12x = 9.
+
ОА. x = 2+ 17
Ов. х = 3 + 6
Ос...
Mathematics, 14.04.2020 08:28 nae467
Complete the square to solve 3x2 + 12x = 9.
+
ОА. x = 2+ 17
Ов. х = 3 + 6
Ос. x=-2+ 7
Op. x= -2+ 13
Answers: 3
Another question on Mathematics
Mathematics, 21.06.2019 17:30
One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)
Answers: 1
Mathematics, 21.06.2019 19:30
Michelle and julie work at a catering company. they need to bake 264 cookies for a birthday party that starts in a little over an hour and a half. each tube of cookie dough claims to make 36 cookies, but michelle eats about 1/5 of every tube and julie makes cookies that are 1.5 times as large as the recommended cookie size.it takes about 8 minutes to bake a container of cookies, but since julie's cookies are larger, they take 12 minutes to bake. a. how many tubes should each girl plan to bake? how long does each girl use the oven? b. explain your solution process what did you make? c. what assumptions did you make?
Answers: 1
Mathematics, 21.06.2019 23:00
What is the location of point g, which partitions the directed line segment from d to f into a 5: 4 ratio? –1 0 2 3
Answers: 1
You know the right answer?
Questions
Biology, 05.02.2021 21:10
Mathematics, 05.02.2021 21:10
Biology, 05.02.2021 21:10
History, 05.02.2021 21:10
Mathematics, 05.02.2021 21:10
Mathematics, 05.02.2021 21:10
Mathematics, 05.02.2021 21:10
Mathematics, 05.02.2021 21:10
Mathematics, 05.02.2021 21:10
Mathematics, 05.02.2021 21:10
Mathematics, 05.02.2021 21:10
