2. Show that the equation (k – 1 )r? + 2x - (k – 3)=0 has real roots for all values of k.

Need solving this second acceleration problem.

Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)

Plz hurry evaluate the expression a+b where a=8 and b=19