Question

quadratic or not quadratic identify which of the following equation are quadratic and which are not
1. 3m+8=15
2. ײ+5×+10=0
3. 25-r²=4r
4. (×+2)²=0
5. 6-2×+3ײ=0​

Answer 1

Respuesta:

everyone except from the first one are.

Explicación paso a paso:

they need to follow ax²+bx+c=0

some of them need rearrangement for that, e.g:

25-r²=4r → 25-r²-4r=0 → -r²-4r+25=0