Q. Express the following fraction in simplest form, only using positive exponents.−4(w2b)420w7Answer:
Simplify Denominator: First, we need to simplify the denominator. The expression (−4(w2b)4) involves a power of a product, so we apply the power to both the coefficient and the variables inside the parentheses.(\(-4(w^{2}b)^{4}) = (−4)^{4} \times (w^{2})^{4} \times b^{4}
Calculate Powers: Now we calculate the powers of each term in the denominator.(−4)4=256 because (−4) multiplied by itself 4 times is 256.(w2)4=w2∗4=w8 because when you raise a power to a power, you multiply the exponents.b4 remains the same.So the denominator becomes 256×w8×b4.
Divide Numerator by Denominator: Next, we divide the numerator by the denominator. We have 20w7 in the numerator and 256w8b4 in the denominator.(20w7)/(256w8b4)We can simplify this by dividing the coefficients and subtracting the exponents of like bases.20/256 reduces to 5/64 after dividing both by 4.w7/w8 reduces to 1/w because w7 divided by w8 is 256w8b40.The 256w8b41 term only appears in the denominator, so it remains as 256w8b42.
Put Together Simplified Expression: Putting it all together, we get the simplified expression:(645)×(w1)×(b41)This simplifies to:64w×b45
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