15+70+45=130 :)) that’s how u calculate the perimeter just add them all together.
We have
2x³+3x²+2x-4-(x³-2x²-x-1). Using the distributive property, we get
2x³+3x²+2x-4-x³+2x²+x+1
Adding and subtracting like terms (e.g. x³+3x³=4x³), we get
x³+5x²+3x+3
<span><span>5/43</span>÷<span>25/86
</span></span><span>=<span>5 × 86/43 × 25
</span></span><span>=<span>430/1075
</span></span><span>=<span>430 ÷ 215/ 1075 ÷ 215
</span></span><span>=<span>2<span>5
</span></span></span>
