The value of 3x² - 5x + 3 when x = 1 is
(a) 1
(b) 0
(c) -1
(d) 11

Solution:

Given, the expression is 3x² - 5x + 3 .

We have to find the value of the expression when x = 1.

Put x = 1 in the expression,

3x² - 5x + 3 = 3(1)² - 5(1) + 3

= 3 - 5 + 3

= 6 - 5

= 1

Therefore, the required value is 1.

✦ Try This: The value of x² + x + 3 when x = -1 is

Given, the expression is x² + x + 3.

We have to find the value of the expression when x = -1.

Put x = -1 in the expression,

x² + x + 3 = (-1)² + (-1) + 3

= 1 - 1 + 3

= 0 + 3

= 3

Therefore, the value of the expression is 3.

☛ Also Check: NCERT Solutions for Class 7 Maths Chapter 12

NCERT Exemplar Class 7 Maths Chapter 10 Problem 14

The value of 3x² - 5x + 3 when x = 1 is (a) 1 (b) 0 (c) -1 (d) 11

Summary:

The value of 3x² - 5x + 3 when x = 1 is 1.

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