Answer: length when perimeter is 78 units: a=26 ,b=13
Length when perimeter is 156 units:
a=26 , b=52
Step-by-step explanation: Given one side =26 , the other is twice as long
Perimeter of a parallelogram =2(a+b)
Using perimeter=78= 2(26+b)
78=52+2b
78-52=2b
26=2b
b=26/2
b=13
When perimeter is 78 units a=26,b=13
Using perimeter =156 units
156=2(26+b)
156=52+2b
156-52=2b
104=2b
b=104/2
b=52
The triangle is equilateral which means the sides are all 6 so x=6
X^4+3x^3-2x^2-5x+8 can be one example
Answer:
The actual answer is 7/2
Step-by-step explanation:
Answer:
Step-by-step explanation:
13) x⁴-12x² +36
(a-b)² = a²-2ab+b²
a = x² ; b = 6
(x²)² - 2 * x² * 6 + 6² = (x² - 6)²
14) w⁴- 14w² - 32 = w⁴+ 2w² - 16w² - 32 = w² (w² + 2) - 16 (w²+2)
= (w² + 2) (w² -16 )
15) k³ + 7k² - 44k = k ( k² + 7k -44) = k ( k+11 ) ( k-4 )
16) 2a³ +28a²+96a =2a(a²+14a+48) = 2a(a+6)(a+8)
17) -x³ +4x² +21x = (-x) ( x² - 4x - 21) = (-x)(x-7)(x+3)
18) m⁶ - 7m⁴ -18m² = m² ( m⁴-7m²-18) = m² (m²-9)(m²+9)
= m² (m+1) (m-1)(m²+9)
19) 9y⁶ +6y⁴ + y²= y² ( 9y⁴+6y²+1) = y² (3y²+1)²
20) 8c⁴+10c² -3 = (4c +1)(2c-3)
