Mirror Lake elementary school has 168 students and chaperones going on the fifth grade class trip each bus can hold 54 people wh
1 answer:
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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
Answer:
x = - 8, x = 8
Step-by-step explanation:
Given
x² - 64 = 0 ( add 64 to both sides )
x² = 64 ( take the square root of both sides )
x = ± = ± 8