All Junior Cert Mathematics posts
• #### How to do this q's djsutt0n

5(t(squared)-2)To be squared-7(t(squarded)-2)-10=0

1. #### Dazzla16

Hi djsutt0n! When you simplify one side of the equation, you get 5t^4 - 27^2 + 24 = 0. This ends up being a quartic equation, and unfortunately, this is not covered in the Junior Cert Maths course (for your interest, this is the answer: x = 2.0683262276067467 or x = 1.0592575778317774 or x = -1.0592575778317774 or x = -2.0683262276067467).

Double-check your equation and try and make sure you have it written correctly.

2. #### Dazzla16

Hi djsutt0n! When you simplify one side of the equation, you get 5t^4 - 27t^2 + 24 = 0. This ends up being a quartic equation, and unfortunately, this is not covered in the Junior Cert Maths course (for your interest, this is the answer: x = 2.0683262276067467 or x = 1.0592575778317774 or x = -1.0592575778317774 or x = -2.0683262276067467).

Double-check your equation and try and make sure you have it written correctly.

(Ignore my first post, I made a slight mistake.)

3. #### djsutt0n

Thanks a lot but this came up in my mocks?

4. #### Dazzla16

Are you sure 5(t^2-2) was to be squared?

5. #### Roberto Mane

Use the minus B formula to solve that question,you must've got the same mock as me...I remember that question.