Question

+
2. How much larger is 13x2 – 7y2 than 6x2 - 9y2?
3. How much does 9a2 + 7a – 2 exceed 2a + 4a+ 3a + 1?
4. A rope is 3a + 6 metres long and is attached to another rope of length 2a –7 metres. Find the total length
of the rope.
5. A wire is (7x – 3) metres long. A length of (5x – 4) metres is cut for use. How much wire is left?
6. If A = 5x2 + 7x + 8 and B = 4x2 -7x + 3, find 2A - B.
7. Find the value of P - Q + 8, if P = (x2 + 7x) and Q = (-x2 – 3x + 2).
At a Glance
Constants have a fixed numerical value.
• A variable takes various numerical values in different situations.
• A combination of a constant and variables combined with the fundamental operc
(+,-, * or/and =) is called an algebraic expression.
Various parts of an algebraic expression separated by (+) or (-) are called the te
like terms.​

Answer 1

Answer:

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Answer 2

Answer:

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