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Mathematics
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OpenStudy (anonymous):
help please
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OpenStudy (mrnood):
are you trapped somewhere?
OpenStudy (hanner_b_nanner):
Lol^^ What do you need help with??? @MUNCH300 :))
OpenStudy (anonymous):
ahahah yeah my classroom
OpenStudy (anonymous):
Im Just play it this Problem
OpenStudy (anonymous):
Both figures below are squares. Find the area of the UNSHADED region. Write your answer in standard form.
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OpenStudy (anonymous):
a. –2x^2 + 10x + 25
b. x^2 + 8x + 25
c. 10x + 25
d. x^2 + 10x + 25
OpenStudy (mrnood):
OK - so what is the area of the shade region? (square has side x)
OpenStudy (mrnood):
THEN
What is the are of the large square (square has side = x+5)
OpenStudy (anonymous):
The big one is 20
OpenStudy (mrnood):
no it isn't - the side is 5+x
what is the area?
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OpenStudy (mrnood):
Start with this:-
If a square has side length L what is its area?
jhonyy9 (jhonyy9):
c. is right but you know it why ?
jhonyy9 (jhonyy9):
little square has area x^2 ,yes ?
bigger has (x+5)^2
jhonyy9 (jhonyy9):
so than just subtract from area of bigger square what is x^2 10x +25 area of shaded square what is x^2 and will get the c. chose
jhonyy9 (jhonyy9):
ok ?
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