A rectangular picture measuring 5 in. by 9 in. is surrounded by a frame with uniform width x. Write a quadratic function in stan
dard form to show the combined area of the picture and fram
2 answers:
A=(5+2x)(9+2x)
A=45+10x+18x+4x^2
A=4x^2+28x+45
(x.x)-(5x9)= Combined area of the picture and frame.
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x= -19
Step-by-step explanation:
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x=38/-2
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