5. Basic algebra: expanding binomials and rules of exponents. (a) Convert all radicals to exponents and rewrite all fractions with all variables in the numerator. 7 Va + r5 x2 9.x r2 8r3 (b) Expand and simplify: 5(x +h)² + 7(x + h) +4 – (5x² + 7x + 4).

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