Question

If a=3 and b= -2, what is the value of a2 + 3ab - b2?

Answer 1

Answer:

-13

Step-by-step explanation:

a^2 + 3ab - b^2?

Plug in a=3 and b= -2

a^2 + 3ab - b^2

=  (3)^2 + 3(3)(-2) - (-2)^2

= 9 - 18 - 4

= -13

Answer 2

Value of expression $a^{2} +3ab-b^{2}$ is -13.

What is an expression?

An expression is a number, a variable, or a combination of numbers and variables and operation symbols.

Given

$a =3 \ and \ b= -2$

Value of expression $a^{2} +3ab-b^{2}$

= $3^{2} +3 \times 3 \times (-2 )- (-2)^{2}$

= $9-18-4$

= $-13$

Value of expression $a^{2} +3ab-b^{2}$ is -13.

Find out more information about expression here

https://brainly.com/question/4619523

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