Algebraic Expre...

Using $$(x + a) (x + b) = x^2+(a+b)x+ab$$, find $$5.1 \times 5.2$$.

The value of $$(x + 3y)^2 + (x - 3y)^2$$ is:

If $$(3x -4) (5x+7)= 15x^2-ax-28$$ then $$a =$$____

Simplify: $$(x + 5)(x + 4)$$

$$(x + 2)(x + 3) -(x + 3)(x -2)=$$

$$(4x + 1)\times (4x + 1) =$$

Find the product of $$\left( 3x-5 \right)$$ and $$\left( x+5 \right) $$.

$$(a -b)^2 -(a + b)^2$$ is equal to:

The product of a monomial and a trinomial is a

$$(3x+2y)(x+y)$$