755 prompts matching "Expanding a bracket with a coefficient on x"
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Solving 4^x = 8^(x-1) by matching bases
I am in SS 1. I'm going to explain solving the equation 4^x = 8^(x-1) by writing both side
Solving 9^x x 3^(x+1) = 1
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Simplifying indices before adding like terms
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What makes a number a surd
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Simplifying the square root of a larger number
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Adding and subtracting like surds
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Adding surds that need simplifying first
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Multiplying two surds together
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Dividing surds using the quotient rule
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Drawing a two-set Venn diagram from data
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Proper subsets versus subsets
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Set difference A minus B
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Working backwards from Venn diagram totals
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Finite and infinite sets
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Interpreting neither-nor in a Venn diagram problem
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Power set of a three-element set
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Finding the nth term of an arithmetic sequence
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Sum of the first n terms of an arithmetic series
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Finding the number of terms in an arithmetic series
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Sum of the first n terms of a geometric series
I am in SS 1. I'm going to explain using the formula Sn = a(r^n - 1)/(r - 1) to find the s