Write the set {x : x is an integer and x^2-9=0} in roster form.(a) {3}(b) {-3}(c) {3,-3}(d) {9,3}This question was addressed to me during an online exam.My query is from Sets and their Representations in portion Sets of Mathematics – Class 11

Write the set {x : x is an integer and x^2-9=0} in roster form.(a) {3}

1.	Write the set {x : x is an integer and x^2-9=0} in roster form.(a) {3}(b) {-3}(c) {3,-3}(d) {9,3}This question was addressed to me during an online exam.My query is from Sets and their Representations in portion Sets of Mathematics – Class 11
Answer» CORRECT option is (c) {3,-3} EASIEST explanation: Since x is given as integer so x can be positive as well as negative. x^2-9=0 => (x-3)(x+3)=0=>x=3,-3. So, the SET {x : x is an integer and x^2-9=0} can be written as {3,-3}.

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Write the set {x : x is an integer and x^2-9=0} in roster form.(a) {3}(b) {-3}(c) {3,-3}(d) {9,3}This question was addressed to me during an online exam.My query is from Sets and their Representations in portion Sets of Mathematics – Class 11

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