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Algebraic Expressions and Identities Class 8th
1. Identify the terms and their coefficients for each of the following expressions:
(i) 7x<sup>2</sup>yz – 5xy
(ii) x<sup>2</sup> + x + 1
(iii) 3x<sup>2</sup>y<sup>2</sup> – 5x<sup>2</sup>y<sup>2</sup>z<sup>2</sup> + z<sup>2</sup>
(iv) 9 – ab + bc – ca
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2 Replies
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(i) 7x<sup>2</sup>yz – 5xy
TERMS COEFFICIENTS
=> 7x<sup style=”font-family: inherit; color: var(–bb-body-text-color);”>2</sup>yz 7
=> –5xy -5
(ii) x<sup style=”background-color: var(–bb-content-background-color); font-family: inherit; color: var(–bb-body-text-color);”>2</sup> + x + 1
TERMS COEFFICIENTS
=> x<sup style=””>2</sup> 1
=> x 1
– 1 is a Constant
(iii) 3x<sup style=”background-color: var(–bb-content-background-color); font-family: inherit; color: var(–bb-body-text-color);”>2</sup>y<sup style=”background-color: var(–bb-content-background-color); font-family: inherit; color: var(–bb-body-text-color);”>2</sup> – 5x<sup style=”background-color: var(–bb-content-background-color); font-family: inherit; color: var(–bb-body-text-color);”>2</sup>y<sup style=”background-color: var(–bb-content-background-color); font-family: inherit; color: var(–bb-body-text-color);”>2</sup>z<sup style=”background-color: var(–bb-content-background-color); font-family: inherit; color: var(–bb-body-text-color);”>2</sup> + z<sup style=”font-family: inherit; color: var(–bb-body-text-color);”>2</sup>
TERMS COEFFICIENTS
=> 3x<sup style=”font-family: inherit; color: var(–bb-body-text-color);”>2</sup>y<sup style=”font-family: inherit; color: var(–bb-body-text-color);”>2</sup> 3
=> – 5x<sup style=”font-family: inherit; color: var(–bb-body-text-color);”>2</sup>y<sup style=”font-family: inherit; color: var(–bb-body-text-color);”>2</sup>z<sup style=”font-family: inherit; color: var(–bb-body-text-color);”>2</sup> -5
=> z<sup style=”font-family: inherit; color: var(–bb-body-text-color);”>2</sup> 1
(iv) 9 – ab + bc – ca
TERMS COEFFICIENTS
=> -ab -1
=> bc 1
=> -ca -1
– 9 is a Constant
