Question

Find the value of 3p² + 4q² − 5 when p = 3 and q = −2

Answer 1

Answer:

Step-by-step explanation:

3p² + 4q² - 5

= 3 (3)² + 4 (- 2)² - 5

= 3 (9) + 4 (4) - 5

= 27 + 16 - 5

= 43 - 5

=38 is the answer.

Answer 2

To find : value of  $3p^{2} +4 q^{2} -5$

Given : $p = 3$  and  $q= -2$

Solution :

• As per given data we know that $p = 3$  and  $q= -2$  .

• Therefore , to find the value of $3p^{2} +4 q^{2} -5$ we substitute the given values of variables in it .
• $3p^{2} +4 q^{2} -5$

       $=3 (3)^{2}+ 4(-2)^{2} -5 \\=3(9)+ 16 -5 \\=27 + 16-5 \\= 38$

Hence , given value expression  $3p^{2} +4 q^{2} -5$  is $38$ .