False, False, True
**********
The first is false since the square root of 19 is 4 and 4/7 is not a whole number
The second is false since the square root of 40 is 6.32 which is less than 7
The last is true because the square root of 30 is 5.48 and that makes the fraction equal 3.65 which again is a whole number while 2/3 is not
<span>-x^2 y^2 + x^4 + 4y^2 - 4x^2
= </span>x^4 -x^2 y^2 - 4x^2 + 4y^2<span>
= x^2 (x^2 - y^2) - 4 (x^2 - y^2)
= (x^2 - y^2)(x^2 - 4)
= (x + y)(x - y) (x + 2)(x - 2) (....using a^2 - b^2 = (a+b)(a-b) )
hope it helps</span>
Answer:
a = -5/13
Step-by-step explanation:
13a = -5
a = -5/13
hope this helps, pls mark brainliest :D
Answer:
ans is 62 only
Step-by-step explanation:
Answer:
B. x-2y=6
Step-by-step explanation: