add : l^2 + m^2, m^2 + n^2, n^2 + l^2, 2lm + 2mn + 2nl
subtract :a)(1.5x - 4y)(1.5x + 4y + 3)
b)(a+7)(a^2 + 3a+5)
c) (x/2 + x/34 ) (x/2 + x/34 )
Answers
Answer:
Construct the following quadrilaterals:
(i) Quadrilateral ABCD
(ii) Quadrilateral JUMP
1. Identify the terms, their coefficients for each of the following expressions:
(i) 5xyz2 – 3zy
(ii) 1 + x + x2
(iii) 4x2y2 – 4x2y2z2 + z2
(iv) 3 – pq + qr – rp
(v)
(vi) 0.3 a – 0.6 ab + 0.5 b
Sol. (i) 5xyz2 – 3zy
In the expression 5xyz2 – 3zy, the terms are 5xyz2 and –3zy.
coefficient of xyz2 in the term 5xyz2 is 5.
coefficient of zy in the term –3zy is –3.
(ii) 1 + x + x2
In the expression 1 + x + x2, the terms are 1, x and x2.
Coefficient of x° in the term 1 is 1.
Coefficient of x in the term x is 1.
Coefficient of x2 is the term x2 is 1.
(iii) In the expression 4x2y2 – 4x2y2z2 + z2, the terms are 4x2y2, –4x2y2z2 and z2.
Coefficient of x2y2 in the
The expression 2y – 5 is formed from the variable y and constants 2 and 5. ... Subtract 5x 2 – 4y2 + 6y – 3 from 7x2 – 4xy + 8y2 + 5x – 3y