Asked by akshay gupta
The width of a rectangular painting is 3inches more than twice the height .It is frames in a 2.5inches wide frames. what is the expression for the combined are of the painting and frame? Factorise the expression if it is possible..
Answers
Answered by
Damon
w = 2h+3
total w = w+5
total h = h+5
A = (w+5)(h+5)
= w h + 5w + 5h + 25
= (2h+3)h + 5(2h+3) + 5h +25
= 2h^2 +3h +10h +15 +5h + 25
= 2h^2 + 18h + 40
= 2(h^2 + 9 h + 20)
=2(h+4)(h+5)
total w = w+5
total h = h+5
A = (w+5)(h+5)
= w h + 5w + 5h + 25
= (2h+3)h + 5(2h+3) + 5h +25
= 2h^2 +3h +10h +15 +5h + 25
= 2h^2 + 18h + 40
= 2(h^2 + 9 h + 20)
=2(h+4)(h+5)
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