Solve the following equationsusing formula 25x square+30x+7=0 2x square+underroot 5 x-5=0 x-2 x+2 ___ +____= 0 x+2 x-2 Share with your friends Share 0 Manbar Singh answered this 1.The given quadratic equation is,25x2 + 30x + 7 = 0Comparing with standard equation, ax2 + bx + c = 0, we geta = 25 ; b = 30 ; c = 7Now, D = b2 - 4ac = 900 - 700 = 200 >0So, the above equation has real and distinct roots given by, x = -b-D2a and x = -b+D2a⇒x =-30-10250 and x =-30+10250⇒x = -3-25 and x = -3+252.The given quadratic equation is,2x2 + 5x - 5= 0Comparing with standard equation, ax2 + bx + c = 0, we geta = 2 ; b =5 ; c =-5Now, D = b2 - 4ac =5 +40=45 >0So, the above equation has real and distinct roots given by, x = -b-D2a and x = -b+D2a⇒x =-5-354 and x =-5+354⇒x = -5 and x = 52 1 View Full Answer