The value of following expression when $x = - 3$ ,

$x^{2}$ − 5x + 4 gives $(- 3)^{2}$ − 5 (−3) + 4 = 9 + 15 + 4 = 28

True

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False

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Solution

The correct option is A
True

$x^{2}$ − 5x + 4 gives

$(- 3)^{2}$ − 5 (−3) + 4 = 9 + 15 + 4 = 28 is true.

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Similar questions

The value of the expression $x^{2} - 5 x + 4 w h e n x = - 3$ is,
$(- 3)^{2} - 5 \times - 3 + 4 = 9 + 15 + 4 = 28$

The value of following expression when x = 3, $x^{2}$ − 5x + 4 gives $(- 3)^{2}$ − 5 (−3) + 4 = 9 + 15 + 4 = 28

Q. Find and correct error in the following mathematical statement.
Substituting

x = - 3

in:
(a)

x^{2} + 5 x + 4

gives

(- 3)^{2} + 5 (- 3) + 4 = 9 + 2 + 4 = 15

(b)

x^{2} - 5 x + 4

gives

(- 3)^{2} - 5 (- 3) + 4 = 9 - 15 + 4 = - 2

(c)

x^{2} + 5 x

gives

(- 3)^{2} + 5 (- 3) = - 9 - 15 = - 24

Find and correct the errors in the following mathematical statement. Substituting x = −3 in

(a) x² + 5x + 4 gives (−3)² + 5 (−3) + 4 = 9 + 2 + 4 = 15

(b) x² − 5x + 4 gives (−3)² − 5 (−3) + 4 = 9 − 15 + 4 = −2

Find and correct the errors in the following mathematical statement, Substituting $x = - 3$ in
$x^{2} + 5 x + 4$ gives $(- 3)^{2} + 5 (- 3) + 4 = 9 + 2 + 4 = 15$

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The value of following expression when x=−3, x2 − 5x + 4 gives (−3)2 − 5 (−3) + 4 = 9 + 15 + 4 = 28

The correct option is A True x2 − 5x + 4 gives (−3)2 − 5 (−3) + 4 = 9 + 15 + 4 = 28 is true.

The value of following expression when $x = - 3$ ,

$x^{2}$ − 5x + 4 gives $(- 3)^{2}$ − 5 (−3) + 4 = 9 + 15 + 4 = 28

The correct option is A
True

$x^{2}$ − 5x + 4 gives

$(- 3)^{2}$ − 5 (−3) + 4 = 9 + 15 + 4 = 28 is true.