One of the greatest strengths of behavioral psychology is the ability to clearly observe and measure behaviors. Weaknesses of this approach include failing to address cognitive and biological processes that influence human actions.
Right away we see that expressions (a), (b), and (d) are equivalent, since addition is commutative: $2x + 8 = 8 + 2x$. We now only have to check (c) and (e). If $x=0$, (c) and (e) have the value 4, whereas (a), (b), and (d) have the value 8.So (c) and (e) are not equivalent to (a), (b), and (d).Moreover, if $x=1$, then (c) has the value 6 and (e) has the value 5, so those two expressions are not equivalent either.For (c), we can use the distributive property and decompose one of the numbers to write two equivalent expressions: $$ \begin{align} &2x+4 \\ &2(x+2) \\ &2(x+1+1) \end{align} $$.o (c) and (e) are not equivalent to (a), (b), and (d). Moreover, if $x=1$, then (c) has the value 6 and (e) has the value 5, so those two expressions are not equivalent either. For (c), we can use the distributive property and decompose one of the numbers to write two equivalent expressions:
Solve for the grouped symbols: (5x^2 - 3x^2) = (2x^2). (3x + x) = (4x). (9 - 15 - 14) = (-20). Write the simplified groups as a new expression: 2x^2 + 4x - 20. Since none of these terms have anything in common, the expression is in its simplest form. Evaluate the expression 4x^2 + 2x - 13 if (x) = 6.Substitute 6 for the value of x: 4(6^2) + 2(6) - 13. Solve for the first set of grouping symbols: 6^2 = 36. Remember that the exponent is only on the x, so only the variable is squared.ince none of these terms have anything in common, the expression is in its simplest form. Evaluate the expression 4x^2 + 2x - 13 if (x) = 6. Substitute 6 for the value of x: 4(6^2) + 2(6) - 13.