2. Questions Bank
  3. 8th Class
  4. Mathematics
  5. Squares and Square Roots

8th Class Mathematics Squares and Square Roots Question Bank Squares and Square Roots

  • question_answer
    Find the number, which when subtracted from its square results in 12.

    A)  \[6\]                                    

    B)                         \[5\]                    

    C)                         \[4\]                    

    D)                         \[8\]                    

    Correct Answer: C

    Solution :

    Let 'x? be the required number. Then \[{{x}^{2}}-x=12\] \[\Rightarrow \] \[x\,(x-1)=12\] By inspection, we have \[4(4-1)=12\] \[\Rightarrow \]               \[4\times 3=12\] \[\Rightarrow \]               \[x=4\]


You need to login to perform this action.
You will be redirected in 3 sec spinner