Answer:
x⁴ - 3x³ - 2x² + 21x - 35
Explanation:
To multiply the polynomials (x² - 7) and (x² - 3x + 5), you can use the distributive property, also known as the FOIL method.
FOIL stands for "First, Outer, Inner, Last."
Here's how we can multiply these two polynomials step by step:
First, distribute the first term in the first polynomial (x²) to all terms in the second polynomial:
(x² - 7)(x² - 3x + 5) = x²(x²) + x²(-3x) + x²(5)
Now, distribute the second term in the first polynomial (-7) to all terms in the second polynomial:
(x² - 7)(x² - 3x + 5) = x²(x²) + x²(-3x) + x²(5) - 7(x²) - 7(-3x) - 7(5)
Next, multiply the terms together:
x⁴ - 3x³ + 5x² - 7x² + 21x - 35
Now, combine like terms by adding or subtracting the terms with the same exponent:
x⁴ - 3x³ - 7x² + 5x² + 21x - 35
x⁴ - 3x³ - 2x² + 21x - 35
So, the product of (x² - 7) and (x² - 3x + 5) is:
x⁴ - 3x³ - 2x² + 21x - 35