5x exponnent 3 + x exponent 2 for x =4

Reasoning: Substitute x = 4: Reasoning: Substitute $x = 4$ into the expression. Calculation: $5(4)^3 + (4)^2$ Math Error Check: Calculation: 4^3: Reasoning: Calculate $4^3$. Calculation: $4^3 = 64$ Math Error Check: Math Error Check: Reasoning: Multiply $5$ by $64$. Calculation: $5 \times 64 = 320$ Math Error Check: Reasoning: Multiply 5 by 64: Reasoning: Calculate $4^2$. Calculation: $4^2 = 16$ Math Error Check: Calculation: 4^2: Reasoning: Add the results from the previous steps. Calculation: $320 + 16 = 336$ Math Error Check:

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For $x = 4$ , calculate $5x^3 + x^2$ .

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Math Problems

Grade 8

Reciprocals and multiplicative inverses

Full solution

Q. For

x = 4

, calculate

5x^3 + x^2

Reasoning: Substitute x = $4$ : Reasoning: Substitute $x = 4$ into the expression. $\newline$ Calculation: $5(4)^3 + (4)^2$ $\newline$ Math Error Check:
Calculation: $4$ ^ $3$ : Reasoning: Calculate $4^3$ . $\newline$ Calculation: $4^3 = 64$ $\newline$ Math Error Check:
Math Error Check: Reasoning: Multiply $5$ by $64$ . $\newline$ Calculation: $5 \times 64 = 320$ $\newline$ Math Error Check:
Reasoning: Multiply $5$ by $64$ : Reasoning: Calculate $4^2$ . $\newline$ Calculation: $4^2 = 16$ $\newline$ Math Error Check:
Calculation: $4$ ^ $2$ : Reasoning: Add the results from the previous steps. $\newline$ Calculation: $320 + 16 = 336$ $\newline$ Math Error Check: