Simplify (4x+7y)^2

${(4 x + 7 y)}^{2}$

Step 1

Rewrite ${(4 x + 7 y)}^{2}$ as $(4 x + 7 y) (4 x + 7 y)$ .

$(4 x + 7 y) (4 x + 7 y)$

Step 2

Expand $(4 x + 7 y) (4 x + 7 y)$ using the FOIL Method.

Apply the distributive property.

$4 x (4 x + 7 y) + 7 y (4 x + 7 y)$

Apply the distributive property.

$4 x (4 x) + 4 x (7 y) + 7 y (4 x + 7 y)$

Apply the distributive property.

$4 x (4 x) + 4 x (7 y) + 7 y (4 x) + 7 y (7 y)$

Step 3

Simplify and combine like terms.

Simplify each term.

Rewrite using the commutative property of multiplication.

$4 \cdot 4 x \cdot x + 4 x (7 y) + 7 y (4 x) + 7 y (7 y)$

Multiply $x$ by $x$ by adding the exponents.

Move $x$ .

$4 \cdot 4 (x \cdot x) + 4 x (7 y) + 7 y (4 x) + 7 y (7 y)$

Multiply $x$ by $x$ .

$4 \cdot 4 x^{2} + 4 x (7 y) + 7 y (4 x) + 7 y (7 y)$

Multiply $4$ by $4$ .

$16 x^{2} + 4 x (7 y) + 7 y (4 x) + 7 y (7 y)$

Rewrite using the commutative property of multiplication.

$16 x^{2} + 4 \cdot 7 x y + 7 y (4 x) + 7 y (7 y)$

Multiply $4$ by $7$ .

$16 x^{2} + 28 x y + 7 y (4 x) + 7 y (7 y)$

Rewrite using the commutative property of multiplication.

$16 x^{2} + 28 x y + 7 \cdot 4 y x + 7 y (7 y)$

Multiply $7$ by $4$ .

$16 x^{2} + 28 x y + 28 y x + 7 y (7 y)$

Rewrite using the commutative property of multiplication.

$16 x^{2} + 28 x y + 28 y x + 7 \cdot 7 y \cdot y$

Multiply $y$ by $y$ by adding the exponents.

Move $y$ .

$16 x^{2} + 28 x y + 28 y x + 7 \cdot 7 (y \cdot y)$

Multiply $y$ by $y$ .

$16 x^{2} + 28 x y + 28 y x + 7 \cdot 7 y^{2}$

Multiply $7$ by $7$ .

$16 x^{2} + 28 x y + 28 y x + 49 y^{2}$

Add $28 x y$ and $28 y x$ .

Move $y$ .

$16 x^{2} + 28 x y + 28 x y + 49 y^{2}$

Add $28 x y$ and $28 x y$ .

$16 x^{2} + 56 x y + 49 y^{2}$

Simplify (4x+7y)^2

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