Answer:
-13a^2 + 170ab - 13b^2.
Step-by-step explanation:
1. 36(a+b)^2 - 49(a-b)^2
This is the difference of 2 squares: a^2 - b^2 = (a + b)(a - b).
36(a+b)^2 - 49(a-b)^2
= (6(a + b) + 7(a - b))( 6(a + b) - 7(a - b))
= (6a + 7a + 6b - 7b)( 6a - 7a + 6b + 7b)
= (13a - b)(-a + 13b)
If you require the expansion of this it is:
-13a^2 + 170ab - 13b^2.
(x + 3) • (2x - 6x)
collect like terms
(x + 3) • (-4x)
distribute -4x through the parentheses
Answer: -4x^2 - 12x
Hope this helps!
I think that it might be 62,100 because the 6 is in the ten thousands place, and if you divide it by 10, 60,000/10, then it would be 6000. 60,000 is 10 times more than 6,000. Correct me if I'm wrong.
Answer:
x= -1
Step-by-step explanation:
4x+3=x
we subtract x to both sides of the equation:
4x -x +3 = x-x
we have:
3x +3 = 0
we subtract 3 to both sides of the equation:
3x +3 -3 = -3
3x = -3
we divide by 3 both sides of the equation
3x/3 = -3/3
x= -1
we test the result in the original equation:
4x+3=x
4*(-1) + 3 = -1
-4 +3 = -1
-1 = -1
so finally x= -1
Answer:
Solution given:
Sin angle is given by opposite side to the hypotenuse
so
Sin E =opposite/hypotenuse=4/5
<u>option</u><u> </u><u>d</u><u>.</u><u>4</u><u>/</u><u>5</u>
