Answer:
x=−5
Step-by-step explanation:
Subtract 2525 from both sides of the equation.
x2+10x=−25x2+10x=-25
To create a trinomial square on the left side of the equation, find a value that is equal to the square of half of bb.
(b2)2=(5)2(b2)2=(5)2
Add the term to each side of the equation.
x2+10x+(5)2=−25+(5)2x2+10x+(5)2=-25+(5)2
Simplify the equation.
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Raise 55 to the power of 22.
x2+10x+25=−25+(5)2x2+10x+25=-25+(5)2
Simplify −25+(5)2-25+(5)2.
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x2+10x+25=0x2+10x+25=0
Factor the perfect trinomial square into (x+5)2(x+5)2.
(x+5)2=0(x+5)2=0
Set x+5x+5 equal to 00 and solve for xx.
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Set the factor equal to 00.
x+5=0x+5=0
Subtract 55 from both sides of the equation.
x=−5
Answer: 43.5
Step-by-step explanation:
Answer:
the answer is B
Step-by-step explanation:
(4y+1)(2y+1) this is the answer
Answer:
24 square units
72 square units
96 square units
Step-by-step explanation:
In the figure attached, the complete question is shown.
One face is a rectangle with length = 12 and width = 8. Its area is: 8*12 = 96 square units
Another face is a rectangle with length = 12 and width = 10. Its area is: 10*12 = 120 square units
Another face is a rectangle with length = 12 and width = 6. Its area is: 6*12 = 72 square units
The other two faces are right triangles with base = 6 and height = 8. Their area is: (6*8)/2 = 24 square units