Question

O
Find the value of the following expression at x = 4
(A) x² + 2x + 3
(B) 2x + 7

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Answer 1

ANS=(A) put x=4 , (4)^2+2(4)+3

=16+8+3=27

(B) 2x+7=2(4)+7=15

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Answer 2

$<h1>SOLUTIONS:</h1>$

$<font color="red">Main concept:Just replace X value by 4 .</font>$

A) Replacing the value of X =4 we got

$4 ^{2} + 2 \times 4 + 3$

=16+8+3

=27.

B)Given :2x+7

Replacing the value of X with 4 we got

$2 \times 4 + 7$

=8+7

=15.

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