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Question

Which of these statements hold true?

i.) 4(x5)=4x5

ii.) x(3x+2)=3x2+2

iii.) 2x2+4(2x)+7=2x2+8x+7 [4 MARKS]


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Solution

Concept: 1 Mark
Application: 1 Mark each

If the statements are true, then LHS should be equal to RHS

i.) LHS=4(x5)=(4×x)(4×5)=4x204x5RHS

ii.) LHS=x(3x+2)=3x2+2x3x2+2RHS

iii.) LHS=2x2+4(2x)+7=4x2+8x+7=2x2+8x+7=RHS


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