Question

В) 9х*(-4х [в 5степени])= г) (-4а²)*(-5а)= д) 3с*5с²*7с³= е) у*4у³*(-2у)=

Answer 1

В)-9*4*х*х^5=-36х^6;  г) 20*а^3; д) 105с^6; е) -8*у^5)))))

Answer 2

Let's solve each expression step by step:

a) 9x * (-4x^5): To simplify this expression, we multiply the coefficients (9 and -4) and add the exponents of the variable x. The resulting expression is: 9x * (-4x^5) = -36x^(1+5) = -36x^6

b) (-4a²) * (-5a): Again, we multiply the coefficients (-4 and -5) and add the exponents of the variable a. The resulting expression is: (-4a²) * (-5a) = 20a^(2+1) = 20a^3

c) 3c * 5c² * 7c³: In this case, we multiply all the coefficients (3, 5, and 7) and add the exponents of the variable c. The resulting expression is: 3c * 5c² * 7c³ = 105c^(1+2+3) = 105c^6

d) y * 4y³ * (-2y): For this expression, we multiply all the coefficients (1, 4, and -2) and add the exponents of the variable y. The resulting expression is: y * 4y³ * (-2y) = -8y^(1+3+1) = -8y^5

Therefore, the simplified expressions are: a) -36x^6 b) 20a^3 c) 105c^6 d) -8y^5