Question

G)7X²-X=0
H)2X²=7X
I)2X²=8X
J)7X²=-14X
K)-2X²+10X=0

Answer 1

H)2X²=7X

 2X²-7X = 0
 x(2x-7)=0 
x1=0

2x2 = 7 ==> x2 = 7/2
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I)2X²=8X

2X²-8X = 0 
 x(2x-8)=0 
x1=0

2x2 = 8 ==> x2 = 4
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J)7X²=-14X

7X²+14X = 0 
 x(x+14)=0 
x1=0

7x2 = 14 ==> x2 = 2
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K)-2X²+10X=0

- 2X²+10 = 0 
 x(2x+10)=0 
x1=0

2x2 = - 10 ==> x2 = - 5
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