Answer:
1)
32x^2 - 28x - 15
2)
30x^2 + 54x - 12
Step-by-step explanation:
1.
(8x+3)(4x-5)
Using FOIL
= (8x)(4x) + (8x)(-5) + (3)(4x) + (3)(-5)
= 32x^2 - 40x + 12x - 15
= 32x^2 - 28x - 15
2.
(10x-2)(3x+6)
Using FOIL
= (10x)(3x) + (10x)(6) + (-2)(3x) + (-2)(6)
= 30x^2 + 60x - 6x - 12
= 30x^2 + 54x - 12
Answer:
Step-by-step explanation:
x-30=14-3x
collect like terms: 4x=14+30
add numbers: 4x=44
divide both sides by 4
x=11
Answer:
b
Step-by-step explanation:
they aren't equivalent and 7/8 is greater than 4/5
Commutative property of addition:
The property that states the sum of an addition problem will be the same no matter the order of its numbers.
a + b = b + a
