Would me first one A because I just in the math and it should be right!
Answer:
Area of rhombus is 105.84 cm².
Step-by-step explanation:
Area of rhombus is given by
- Area = diagonal ¹ × diagonal ² / 2
- = 8.4 + 8.4 × 6.3 + 6.3 / 2
- = 16.8cm × 12.6 cm /2
- = 211.68 cm²/2
- = 105.84 cm²
Answer:
6i^2-12i
Step-by-step explanation:
3i×2i =6i^2
3i×4 =12i

To solve this equation , we need to write it in quadratic form

To get the equation in quadratic form we replace x^2 with u

can be written as
, Replace u for x^2
So equation becomes

Now we factor the left hand side
-16 and -1 are the two factors whose product is +16 and sum is -17
(u-16) (u-1) = 0
u -16 = 0 so u=16
u-1 =0 so u=1
WE assume u = x^2, Now we replace u with x^2
Now take square root on both sides , x= +4 and x=-4
Now take square root on both sides , x= +1 and x=-1
So zeros of the function are -4, -1, 1, 4