Question

Draw a ray diagram to locate the image of an object placed 5cm in front of a plane mirror

Answer 1

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√2x² + 7x + 5√2=0

=> √2x²+ (5+2)x+5√2 = 0

=> √2x²+ 5x+2x+ 5√2 = 0

=> √2x²+5x+√2×√2x+5√2 = 0

=> √2(√2x+5)+ x(√2x+5) = 0

=> ( √2x+5)(x+√2) = 0

=> 0, x+√2 = √2x+5 = 0

=> x= -5/√2 , x = -√2

Hence,,,

Zeros are -5/√2 , √2.