Question

please send me the answer please Anyone
it's a request from me please​

Answer 1

Step-by-step explanation:

Solution :-

i) Given that (5x+3)(2x+4)

=> 5x(2x+4)+3(2x+4)

=> 10x²+20x+6x+12

=> 10x²+36x+12

ii) Given that (7p-3q)(2p+5q)

=> 7p(2p+5q)-3q(2p+5q)

=> 14p²+35pq-6pq-15q²

=> 14p²+29pq-15q²

iii)Given that [(2/5)a+b][a²-(1/5)b²]

=> (2/5)a[a²-(1/5)b²]+b[a²-(1/5)b²]

=> (2/5)a³-(2/25)ab²+a²b-(1/5)b³

iv) Given that (m²n-5)(6-mn²)

=> m²n(6-mn²)-5(6-mn²)

=> 6m²n-m³n³-30+5mn²

v) Given that (4x²+7y³)(3xy-2y²)

=> 4x²(3xy-2y²)+7y³(3xy-2y²)

=> 12x³y-8x²y²+21xy⁴-14y⁵

vi) Given that (1.1x+2.7y)(1.1x-2.7y)

This is in form of (a+b)(a-b)

Where , a = 1.1 x and b = 2.7y

We know that

(a+b)(a-b) = a²-b²

(1.1x+2.7y)(1.1x-2.7y)

=> (1.1x)²-(2.7y)²

=> 1.21x²-7.29y²