Answered

Westonci.ca is the Q&A platform that connects you with experts who provide accurate and detailed answers. Discover detailed solutions to your questions from a wide network of experts on our comprehensive Q&A platform. Join our platform to connect with experts ready to provide precise answers to your questions in different areas.

Find the exact solution of x
3x^2+7=28
A.+√7
B.7
C.+7
D.-7

Sagot :

Answer:

x = ± [tex]\sqrt{7}[/tex]

Step-by-step explanation:

3x² + 7 = 28 ( subtract 7 from both sides )

3x² = 21 ( divide both sides by 3 )

x² = 7 ( take square root of both sides )

x = ± [tex]\sqrt{7}[/tex]

that is x = - [tex]\sqrt{7}[/tex] , x = [tex]\sqrt{7}[/tex]

cher1999

Answer:

A. +[tex]\sqrt{7}[/tex]

Step-by-step explanation:

3x^2+7=28
3([tex]+\sqrt{7} ^{2}[/tex] )+7=28

3(7)+7=28

21+7=28
28=28

Hope it helps

We appreciate your time on our site. Don't hesitate to return whenever you have more questions or need further clarification. We hope our answers were useful. Return anytime for more information and answers to any other questions you have. Thank you for visiting Westonci.ca, your go-to source for reliable answers. Come back soon for more expert insights.