rst = -d/a

rst = -(-6)/2

rst = 3

ok thank you very much

how does sin20 become 2sin0 cos0?

sorry im terrible at this topic

thank you

could you explain how the 2n appeared please

thank you, but can you please explain the first line and where you got that from, apart from that part it all makes sense

thank you very much

NVM i used 2 for ub in my e equation instead of -2 in all 4 of my attempts..

How did you find those numbers?

i subbed in 2 and 7 into the second differentiated equation but it wasnt those numbers, sorry im just really bad at these

thank you so much for teaching me