<em> </em><em>Hope</em><em> </em><em>this</em><em> </em><em>will</em><em> </em><em>help</em><em> </em><em>u</em><em>.</em><em>.</em><em>.</em><em>.</em>
-6.8^2
You can do this with a calculator or pen and paper.
With a calculator;
-6.8 squared = 46.24 (Notice that the answer is positive!)
6x² + 12x - 21
3(2x² + 4x - 7)
2x² + 4x - 7 ⇒ This is the factorised answer
This is how you solve it: