Answer:
2x(5x + 14) + 15
Step-by-step explanation:
Given: (2 + 3)(4x + 5) - 8x( - 2)
(2 + 3)(4x + 5) - 8x( - 2) = 2(4x + 5) + 3(4x + 5) - 8x( - 2)
= (8 + 10 + 12x + 15) - 8 + 16x
= 8 + 10 + 12x + 15 - 8 + 16x
collecting like terms to have,
8- 8 + 10 + 12x + 16x + 15
10 + 28x + 15
Thus,
(2 + 3)(4x + 5) - 8x( - 2) = 10 + 28x + 15
= 2x(5x + 14) + 15
C
the expression equals 0. 5-5 is 0...
r=8
45=6r-3
48=6r
x = - 8, x = 8
Given
x² - 64 = 0 ( add 64 to both sides )
x² = 64 ( take the square root of both sides )
x = ± = ± 8