(2x + 5) (4x - 2)
A.
6x² + 20x - 10
B.
8x² + 24x + 10
C.
8x² + 24x - 10
D.
8x² + 16x - 10
C.
8x² + 24x - 10
that is wrong
Apologies for the mistake. Let's work it out step by step:
(2x + 5) (4x - 2)
= 2x(4x) + 2x(-2) + 5(4x) + 5(-2)
= 8x^2 - 4x + 20x - 10
= 8x^2 + 16x - 10
Therefore, the correct answer is:
D. 8x² + 16x - 10
Multiply: (5ab²)(6a⁴b³)
A.
30a⁵b⁵
B.
30a⁴b⁵
C.
11a⁵b⁵
D.
30ab¹⁰
When multiplying (5ab²)(6a⁴b³), you multiply the coefficients together and add the exponents of the variables:
(5 * 6)(a * a^4)(b^2 * b^3)
= 30a⁵b⁵
Therefore, the correct answer is:
A. 30a⁵b⁵