12y(5y-7)(4y+9)=0
please show step by step to solve

y=0,y=7/5,y=-9/4

Step-by-step explanation:

12y(5y-7)(4y+9)=0

Using the zero product property

12y =0   (5y-7) =0  (4y+9)=0

12y/12 =0/12      5y-7 +7 =0+7     4y+9-9=0-9

y =0                        5y = 7               4y = -9

                              5y/5 = 7/5        4y/4 =-9/4

                                y = 7/5              y =-9/4

13

step-by-step explanation:

169-1=168

168-3=165

165-5=160

160-7=153

153-9=144

144-11=133

133-13=120

120-15=105

105-17=88

88-19=69

69-21=48

48-23=25

25-25=0

since it took 13times to completely subtract it hence its square root is 13

figure c

step-by-step explanation:

hope this .