Answer:
25x ²−49y ²
Step-by-step explanation:
We need to find product of (5x+7)(5x−7y)
By using identity (a+b)(a−b)=a −b ²
We have a=5x,b=7y
Thus (5x+7y)(5x−7y)=(5x) ²−(7y)
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Step-by-step explanation:
everything can be found in the picture
<h2><u>Direct answer</u> :</h2>
Width of the enlarged photograph = 14 cm
<h2><u>Steps to derive the correct answer</u> :</h2>
Length of a small photograph = 6 cm
Width of a small photograph = 4 cm
Length of the photograph when enlarged = 21 cm
Let the width of the photograph when enlarged be x.
Which means :






Thus, the value of x = 14
Therefore, the width of the enlarged photograph = <u>14 cm</u>
Answer:
6
Step-by-step explanation:
Answer:
sjjrnf b
Step-by-step explanation:
bbjjdjmend. fnrm xx