-5b2+10b+10b=120
-5b2+20b=120
-5b(b-4)=120
b-4=-24b
-b-24b=-4
-b(1-24)=-4
b=0.173913043478261
Answer:
Step-by-step explanation:
-20x^4-100x^2
Correct answer; A right angle
highest common factor of 20 and 30=10
there will be 5 pens in each box.
Answer:
Step-by-step explanation: