Simplify the algebraic expression: x(x + 3) + x(2x – 4) + 6

3x^2 - x + 6

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3x2+−x+6

Step-by-step explanation:

First step - you have to remember the distributive rule.

so, x times x is x^2.

x times 3 is 3x

x times 2x is 2x^2 and so on

= x^2+3x+2x^2+ −4x+6

Second step - we have to combine like terms

x^2+3x+2x^2+ −4x+6

(x^2+2x^2)+(3x+−4x)+(6)

= 3x2+−x+6

the formula of a slope:

we have the points (-2, 7) and (2, 3). substitute: