Question

plz do it guys .....i need ur help in maths.
Plz do in pen and copy.....thanks I promise will mark brainleist that's why give me in little explanation​

Answer 1

In this . .....

there is a use of identity (a + b)²

And 9x² + 30xy + 25y²

factorise it first

(3x)² + 2×3x×5y + (5y)²

= (3x + 5y)²

now putting the value

x = 152

y = -91

(3 × 152 + 5 × -91)²

= (456 + {-455})²

= (456 - 455)²

= (1)²

= 1 Answer .