Question

USING ALGEBRAIC IDENTITIES , expand the following :
(a) (3x+5)^{2}
(b) (p-3q)^{2}
(c) (2x-1)^{2}
(d) (-7e-10h)^{2}

Answer 1

Step-by-step explanation:

1. 9x²+25+30x
2. p²+9q²+6pq
3. 4x²+1+4x
4. 49e²+100h²+140eh

Answer 2

Step-by-step explanation:

a) (3x+5)^{2}

(a+b)^2 = a^2 + b^2 + 2ab

= a=3x and b =5

=(3x)^2+(5)^2+2(3x ×5)

=9x^2+25+2(15x)

=9x^2+25+30x