find and correct the errors in the following mathematical statements

Q10) Substituting x = - 3 in

(c)

x ^2 + 5 x \: \: gives \: \: ( -3 ) ^ 2 + 5 ( -3 ) = -9-15 = -24

Answers (1)

We need to  Substitute  x = - 3 in   x^{2} + 5x
                                                    =  (-3)^{2} + 5(-3)
                                                     = 9 - 15
                                                     = - 6  \neq   R.H.S
 Correct statement is   Substitute  x = - 3 in   x^{2} + 5x   gives -6

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