For items 18 to 20, determine the equivalent quadratic equation of the following. 18. x(x+5)=0 M.x2.5x A. x2 +5x=0 T. x-5 H. x2-5=0 19. (x+2)(x-7)=5x M. X. 10X-14=0 A. x2 +10%-14=0 T. X2-10x+14=0 H. x2 +10x+14=0 20. (x-3)? = 10 M. x2 +6x+1=0 A. X2-6x+1=0 T. x2 +6x-1=0 H. x2 - 6x-1=0 - For items 21 to 23, Answer the following questions below. 21. Find two consecutive positive numbers whose product is 90. M, 2 and 45 A.3 and 30 T.5 and 18 H. 9 and 10
