x²-4x-5=0
The given equation is quadratic
So we can perform prime factorisation of it.
factors of -5, that add up to give -4 are -5 and 1
therefore replacing -4x by -5x+x
x²-5x+x-5=0
performing factoring by grouping,
(x²-5x)+(x-5)=0
x(x-5)+(x-5)=0
(x+1)(x-5)=0
x+1=0 and x-5=0
Answer is x=-1 and x=5
29.95+8.49=38.44. 2x20=40
40.00
- 38.44. ————————-
————
1.56. ======$1.56
Answer:
Y=4
Step-by-step explanation:
y intercept means x=0
Y=4
Scale of model is 1 inch represent how many feet in real life
8inch=scale
30 feet=real
8:30=4:15=2:7.5=1:3.75
the one we can se taht matches is D
4 inches=15 feet
D
7. group and add like terms
sum means add btw
5x-2+x+8
5x+x-2+8
6x+6
A
6. D
7. A
1.
(100 + d^2)(d + 10)(d - 10)
Use the rule of splitting perfect squares to get the factors.
2.
x^4y^8z^2(x^2z^6 - y)
The first term is the greatest common factor.
