Step 1: | When squaring a binomial, don’t be lazy and write it twice. Then distribute or use the FOIL method to multiply the two binomials. There are formulas that you can memorize, but I suggest that you just write it twice and distribute or FOIL. |
Step 2: | Combine like terms. |
Example 1 – Multiply: (3x – 7)^{2}
Step 1: Don’t be lazy, write it twice and then distribute or use the FOIL method to multiply the binomials. | |
Step 2: Combine like terms. |
Example 2 – Multiply: (4x + 5)^{2}
Step 1: Don’t be lazy, write it twice and then distribute or use the FOIL method to multiply the binomials. | |
Step 2: Combine like terms. |
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Example 3 – Multiply: (6x – 5y)^{2}
Step 1: Don’t be lazy, write it twice and then distribute or use the FOIL method to multiply the binomials. | |
Step 2: Combine like terms. |
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Example 4 – Multiply: (9x + 2y)^{2}
Step 1: Don’t be lazy, write it twice and then distribute or use the FOIL method to multiply the binomials. | |
Step 2: Combine like terms. |
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Example 5 – Multiply: (5x2 – 8y)^{2}
Step 1: Don’t be lazy, write it twice and then distribute or use the FOIL method to multiply the binomials. | |
Step 2: Combine like terms. |