10. Find \( \left(-5.3 \times 10^{3}\right)-\left(-8 \times 10^{2}\right) \). Use what you know about scientific notation to express your answer with a power of 10 .

Calculate or simplify the expression \( -5.3*10^3-(-8*10^2) \). Calculate the value by following steps: - step0: Calculate: \(-5.3\times 10^{3}--8\times 10^{2}\) - step1: Remove the parentheses: \(-5.3\times 10^{3}+8\times 10^{2}\) - step2: Rewrite the expression: \(-53\times 10^{2}+8\times 10^{2}\) - step3: Collect like terms: \(\left(-53+8\right)\times 10^{2}\) - step4: Add the numbers: \(-45\times 10^{2}\) - step5: Evaluate the power: \(-45\times 100\) - step6: Multiply the numbers: \(-4500\) The result of \( \left(-5.3 \times 10^{3}\right)-\left(-8 \times 10^{2}\right) \) is -4500. To express the answer with a power of 10, we can rewrite -4500 as -4.5 * 10^3.