Answer:
b=19
Step-by-step explanation:
2x(3x+5)+3(3x+5)=ax2 +bx+c
by expansion,
6x2 +10x +9x+15=6x2 +19x +15
I think it's 1/4 that's my answer
Negative 45 or -45 because different signs with multiplication are always negative
Answer:
7
Step-by-step explanation:
28 divided by 4 is 7