Answer:
-66s²-6rs
Step-by-step explanation:
(11s+r)(-7s+s)
(11s+r)(-6s)
-66s^2-6rs
Answer:
none, n = 6
Step-by-step explanation:
3n + 4n = 42
7n = 42
n = 6
f1×f2-f3=(-5x+4)×(-6x-5)-(-9x+2)=30x^2-24x+25x-20+9x-2=30x^2+10x-22=(5x+1)^2-23
13 x 12 = 156 in<span>2 Hope I could help :)</span>